research communications
E)-2-(furan-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one and 3-benzyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one from synchrotron X-ray diffraction
of 3-benzyl-2-[(aDepartment of Chemistry, Faculty of Sciences, University of Douala, PO Box 24157, Douala, Republic of Cameroon, bOrganic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklay St., Moscow 117198, Russian Federation, cNational Research Centre "Kurchatov Institute", 1 Acad. Kurchatov Sq., Moscow 123182, Russian Federation, and dInorganic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklay St., Moscow 117198, Russian Federation
*Correspondence e-mail: toflavien@yahoo.fr
The chiral title compounds, C21H18N2O2, (I), and C21H18N2OS, (II) – products of the three-component reaction between benzylamine, isatoic anhydride and furyl- or thienyl-acrolein – are isostructural and form isomorphous racemic crystals. The tetrahydropyrimidine ring in (I) and (II) adopts a sofa conformation. The amino N atom has a trigonal–pyramidal geometry [sum of the bond angles is 347.0° for both (I) and (II)], whereas the amido N atom is flat [sum of the bond angles is 359.3° for both (I) and (II)]. The furyl- and thienylethenyl substituents in (I) and (II) are planar and the conformation about the bridging C=C bond is E. These bulky fragments occupy the axial position at the quaternary C atom of the tetrahydropyrimidine ring, apparently, due to steric reasons. In the crystals, molecules of (I) and (II) form hydrogen-bonded helicoidal chains propagating along [010] by strong intermolecular N—H⋯O hydrogen bonds.
1. Chemical context
The synthesis and chemistry of quinazoline and quinazolinone derivatives have remained at the focus of biochemical research over the past decade owing to their high and diverse physiological activities (for recent reviews, see: Jafari et al., 2016; Wang & Gao, 2013; Selvam & Kumar, 2011). A large part of these studies has been aimed at the development of methods for the synthesis of 2-aryl-substituted quinazolines. However, 2-ethenylquinazolines are much more attractive synthons for subsequent modifications of the heterocyclic skeleton.
Two synthetic approaches A and B (Fig. 1) are known for 2-ethenylphenyl-substituted heterocycles (Mohammadpoor-Baltork et al., 2011; Ramesh et al., 2012; Cheng et al., 2012; Ghorbani-Choghamarani & Norouzi, 2014; Zhang et al., 2014, 2016; Deng et al., 2015; Noori et al., 2017; Alinezhad et al., 2017). However, up to date, there is practically no information about the synthesis of 2-ethenylhetaryl-substituted quinazolines (Frackenpohl et al., 2016; Zaytsev et al., 2015; Celltech & Limited, 2004; Kundu & Chaudhuri, 2001). Taking into account the high biological activity of furan, thiophene, and pyrrole derivatives, it appeared very attractive to obtain quinazolines of this type. It is well known that, for biological researches, the conformation of a molecule plays a key role. In this connection, the present work is aimed at revealing the conformational features of 2-ethenylhetaryl-substituted quinazolines.
Using method A, the three-component reaction between benzylamine, isatoic anhydride and furyl- or thienylacrolein in the presence of a catalytic quantity of p-TsOH afforded the 3-benzyl-2-[(E)-2-(furan-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one (I) and 3-benzyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one (II) in moderate yields.
2. Structural commentary
Compounds (I), C21H18N2O2, and (II), C21H18N2OS – the products of the three-component reaction between benzylamine, isatoic anhydride and furyl- or thienyl-acrolein are isostructural and crystallize in the orthorhombic Pbca (Figs. 2 and 3).
The tetrahydropyrimidine ring in (I) and (II) adopts a sofa conformation, with the C2 carbon atom deviating from the mean plane of the other atoms of the ring by 0.526 (1) and 0.528 (2) Å for (I) and (II), respectively. The nitrogen N1 atom has a trigonal-pyramidal geometry [sum of the bond angles is 347° for both (I) and (II)], whereas the nitrogen N3 atom is flattened [sum of the bond angles is 359.3° for both (I) and (II)]. The furyl- and thienyl-ethenyl substituents in (I) and (II) are planar and have the E-conformation at the C9=C10 double bond. Remarkably, these bulky fragments occupy the axial position at the quaternary C2 carbon atom of the tetrahydropyrimidine ring, apparently, due to the steric interaction with the benzyl substituent.
The molecules of (I) and (II) possess an asymmetric center at the C2 carbon atom. The crystals of (I) and (II) are racemates.
3. Supramolecular features
In the crystals of (I) and (II), molecules form hydrogen-bonded helicoidal chains propagating along the [010] direction by strong intermolecular N—H⋯O hydrogen bonds (Tables 1 and 2, Figs. 4 and 5).
4. Synthesis and crystallization
3-Benzyl-2-[(E)-2-(2-aryl)ethenyl]-2,3-dihydroquinazolin-4-ones (I) and (II) were synthesized using a method similar to the recently described procedure (Fig. 6) (Zaytsev et al., 2017).
General procedure. p-TsOH (0.79 g, 4.6 mmol) was added to a mixture of isatoic anhydride (1.5 g, 9.2 mmol), benzylamine (1.2 mL, 11.0 mmol), and furyl- or thienylacrolein (9.2 mmol) in 50 mL EtOH. The reaction mixture was heated under reflux for 4 h. The progress of the reaction was monitored by TLC. When the reaction completed, the mixture was diluted with H2O (100 mL) and extracted with EtOAc (3 × 50 mL). The organic layers were combined, dried (MgSO4), concentrated in vacuo and the residue was purified by on SiO2 (3 × 20 cm) using hexane and then EtOAc/hexane (1/10→1/5) mixtures as The resulting product was recrystallized from a mixture of hexane–EtOAc [for (I)] or EtOAc–EtOH [for (II)] to afford the analytically pure samples of the target products.
3-Benzyl-2-[(E)-2-(furan-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one (I). Colourless prisms. Yield is 2.31 g (76%). M.p. = 427.1 K (hexane–EtOAc). IR (KBr), ν (cm−1): 3376, 1645, 1611. 1H NMR (CDCl3, 600.2 MHz, 301 K): δ = 3.86 (d, 1H, CH2N, J = 15.1), 4.61 (br s, 1H, NH), 4.98 (br d, 1H, H2, J = 5.5), 5.59 (d, 1H, CH2N, J = 15.1), 6.24 (d, 1H, H3, furyl, J = 3.1), 6.25 (d, 1H, CH=CH, J = 6.2), 6.34 (dd, 1H, H4, furyl, J = 2.1, J = 3.1), 6.59 (d, 1H, H8, J = 8.2), 6.83 (t, 1H, H6, J = 7.6), 7.24–7.34 (m, 7H, HAr), 7.96 (dd, 1H, H5, J = 1.4, J = 7.6). 13C NMR (CDCl3, 100 MHz, 301 K): δ = 46.7 (CH2N), 69.8 (C2), 109.9, 111.5, 114.8, 119.1, 121.1, 123.6, 127.5, 127.9, 128.7, 128.7, 133.6, 115.7, 136.9, 145.4, 151.1, 142.7 (CAr, CH=CH), 162.9 (NCO). MS (EI, 70 eV): m/z = 330 [M]+ (93), 239 (100), 197 (71), 170 (20), 160 (19), 120 (40), 106 (55), 91 (81), 76 (58), 65 (45), 51 (37), 43 (20).
3-Benzyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one (II). Yellow prisms. Yield is 2.39 g (75%). M.p. = 434.1–435.1 K (EtOAc–EtOH). IR (KBr), ν (cm−1): 3306, 1625, 1506. 1H NMR (DMSO, 600.2 MHz, 301 K): δ = 4.05 (d, 1H, CH2N, J = 15.8), 5.15-5.17 (m, 2H, H2, CH2N), 6.00 (dd, 1H, CH=CH, J = 6.8, J = 15.1), 6.69–6.76 (m, 3H, H6, H8, CH=CH), 6.96 (dd, 1H, H4, thienyl, J = 3.4, J = 5.2), 7.07 (br d, 1H, H3, thienyl, J = 3.4), 7.07 (br s, 1H, NH), 7.23–7.32 (m, 6H, HAr), 7.38 (br d, 1H, H2, thienyl, J = 5.2), 7.66 (dd, 1H, H5, J = 1.4, J = 8.2). 13C NMR (DMSO, 150.9 MHz, 301 K): δ = 47.0 (CH2N), 69.6 (C2), 115.1, 115.2, 118.0, 125.7 (2C), 126.4, 127.7, 127.9, 128.1, 128.3, 128.4, 129.0, 134.0, 138.3, 140.8, 147.1 (CAr, CH=CH), 162.4 (NCO). MS (EI, 70 eV): m/z = 346 [M]+ (76), 255 (100), 237 (93), 213 (37), 106 (14), 91 (99), 65 (13).
5. Refinement
Crystal data, data collection and structure . X-ray diffraction studies were carried out on the "Belok" beamline of the National Research Center "Kurchatov Institute" (Moscow, Russian Federation) using a Rayonix SX165 CCD detector. A total of 360 images for each compounds were collected using an oscillation range of 1.0° (φ scan mode, two different crystal orientations) and corrected for absorption using the SCALA program (Evans, 2006). The data were indexed, integrated and scaled using the utility iMOSFLM in the CCP4 program (Battye et al., 2011).
details are summarized in Table 3The hydrogen atoms of the amino groups were localized in difference-Fourier maps and refined isotropically with fixed displacement parameters [Uĩso(H) = 1.2Ueq(N)]. The other hydrogen atoms were placed in calculated positions with C—H = 0.95–1.00 Å and refined in the riding model with fixed isotropic displacement parameters [Uĩso(H) = 1.2Ueq(C)].
A relatively large number of reflections (a few dozen) were omitted due to the following reasons: (1) In order to achieve better I/σ statistics for high-angle reflections we selected a larger exposure time, which resulted in some intensity overloads in the low-angle part of the area. These corrupted intensities were excluded from final steps of the (2) In the current setup of the instrument, the low-temperature device eclipses a small region of the detector near its high-angle limit. This resulted in zero intensity of some reflections. (3) In the case of (II), the quality of the single crystal chosen for the diffraction experiment was far from perfect. Some systematic intensity deviations can be due to extinction and defects present in the crystal.
Supporting information
https://doi.org/10.1107/S2056989017017479/ld2142sup1.cif
contains datablocks global, I, II. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989017017479/ld2142Isup2.hkl
Structure factors: contains datablock II. DOI: https://doi.org/10.1107/S2056989017017479/ld2142IIsup3.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989017017479/ld2142Isup4.cml
Supporting information file. DOI: https://doi.org/10.1107/S2056989017017479/ld2142IIsup5.cml
For both structures, data collection: Marccd (Doyle, 2011); cell
iMOSFLM (Battye et al., 2011); data reduction: iMOSFLM (Battye et al., 2011); program(s) used to solve structure: SHELXT (Sheldrick, 2015); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: SHELXTL (Sheldrick, 2015); software used to prepare material for publication: SHELXTL (Sheldrick, 2015).C21H18N2O2 | Dx = 1.298 Mg m−3 |
Mr = 330.37 | Synchrotron radiation, λ = 0.96260 Å |
Orthorhombic, Pbca | Cell parameters from 600 reflections |
a = 14.292 (3) Å | θ = 3.0–36.0° |
b = 13.729 (3) Å | µ = 0.17 mm−1 |
c = 17.230 (3) Å | T = 100 K |
V = 3380.8 (12) Å3 | Prism, colourless |
Z = 8 | 0.30 × 0.25 × 0.15 mm |
F(000) = 1392 |
Rayonix SX165 CCD diffractometer | 3017 reflections with I > 2σ(I) |
/f scan | Rint = 0.079 |
Absorption correction: multi-scan (Scala; Evans, 2006) | θmax = 38.5°, θmin = 3.2° |
Tmin = 0.940, Tmax = 0.970 | h = −18→18 |
34783 measured reflections | k = −17→17 |
3705 independent reflections | l = −21→21 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.042 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.112 | w = 1/[σ2(Fo2) + (0.0539P)2 + 0.539P] where P = (Fo2 + 2Fc2)/3 |
S = 1.08 | (Δ/σ)max = 0.001 |
3705 reflections | Δρmax = 0.28 e Å−3 |
230 parameters | Δρmin = −0.17 e Å−3 |
0 restraints | Extinction correction: SHELXL2014 (Sheldrick, 2015), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: difference Fourier map | Extinction coefficient: 0.0041 (8) |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.94874 (5) | 0.38755 (6) | 0.80431 (5) | 0.0290 (2) | |
O2 | 0.78370 (6) | 0.74574 (6) | 0.58408 (5) | 0.0324 (2) | |
N1 | 0.75445 (7) | 0.45360 (8) | 0.55253 (6) | 0.0259 (3) | |
H1 | 0.7542 (10) | 0.3883 (11) | 0.5507 (8) | 0.031* | |
C2 | 0.73864 (8) | 0.49053 (9) | 0.63117 (7) | 0.0245 (3) | |
H2 | 0.6772 | 0.4641 | 0.6493 | 0.029* | |
N3 | 0.72977 (6) | 0.59857 (7) | 0.62784 (6) | 0.0241 (2) | |
C4 | 0.78346 (8) | 0.65486 (9) | 0.57961 (7) | 0.0243 (3) | |
C4A | 0.83803 (7) | 0.60140 (8) | 0.51944 (7) | 0.0239 (3) | |
C5 | 0.89993 (8) | 0.65246 (9) | 0.47069 (8) | 0.0287 (3) | |
H5 | 0.9115 | 0.7196 | 0.4800 | 0.034* | |
C6 | 0.94453 (8) | 0.60605 (10) | 0.40899 (8) | 0.0336 (3) | |
H6 | 0.9863 | 0.6409 | 0.3763 | 0.040* | |
C7 | 0.92651 (9) | 0.50687 (10) | 0.39610 (8) | 0.0343 (3) | |
H7 | 0.9564 | 0.4747 | 0.3541 | 0.041* | |
C8 | 0.86562 (8) | 0.45466 (9) | 0.44362 (7) | 0.0296 (3) | |
H8 | 0.8545 | 0.3875 | 0.4338 | 0.036* | |
C8A | 0.82023 (7) | 0.50135 (9) | 0.50644 (7) | 0.0240 (3) | |
C9 | 0.81224 (8) | 0.45883 (8) | 0.68936 (7) | 0.0243 (3) | |
H9 | 0.8760 | 0.4743 | 0.6798 | 0.029* | |
C10 | 0.78969 (8) | 0.40943 (9) | 0.75408 (7) | 0.0253 (3) | |
H10 | 0.7251 | 0.3963 | 0.7618 | 0.030* | |
C11 | 0.85346 (8) | 0.37393 (9) | 0.81353 (7) | 0.0252 (3) | |
C12 | 0.83634 (9) | 0.32594 (9) | 0.88182 (7) | 0.0295 (3) | |
H12 | 0.7769 | 0.3077 | 0.9017 | 0.035* | |
C13 | 0.92549 (9) | 0.30860 (9) | 0.91761 (8) | 0.0328 (3) | |
H13 | 0.9367 | 0.2768 | 0.9657 | 0.039* | |
C14 | 0.99049 (9) | 0.34671 (9) | 0.86917 (8) | 0.0321 (3) | |
H14 | 1.0560 | 0.3456 | 0.8784 | 0.039* | |
C15 | 0.67156 (8) | 0.64346 (9) | 0.68802 (7) | 0.0271 (3) | |
H15A | 0.6881 | 0.7133 | 0.6921 | 0.032* | |
H15B | 0.6860 | 0.6125 | 0.7385 | 0.032* | |
C16 | 0.56621 (8) | 0.63468 (8) | 0.67274 (7) | 0.0232 (3) | |
C17 | 0.52921 (8) | 0.59729 (9) | 0.60354 (7) | 0.0255 (3) | |
H17 | 0.5702 | 0.5750 | 0.5639 | 0.031* | |
C18 | 0.43186 (8) | 0.59258 (9) | 0.59243 (8) | 0.0287 (3) | |
H18 | 0.4074 | 0.5664 | 0.5456 | 0.034* | |
C19 | 0.37128 (8) | 0.62615 (9) | 0.64965 (8) | 0.0319 (3) | |
H19 | 0.3055 | 0.6233 | 0.6418 | 0.038* | |
C20 | 0.40750 (9) | 0.66416 (9) | 0.71896 (8) | 0.0316 (3) | |
H20 | 0.3663 | 0.6876 | 0.7580 | 0.038* | |
C21 | 0.50438 (8) | 0.66754 (9) | 0.73049 (7) | 0.0272 (3) | |
H21 | 0.5286 | 0.6923 | 0.7779 | 0.033* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0247 (4) | 0.0273 (5) | 0.0350 (5) | −0.0009 (3) | −0.0026 (4) | 0.0020 (4) |
O2 | 0.0333 (5) | 0.0183 (5) | 0.0457 (6) | 0.0014 (3) | 0.0002 (4) | −0.0013 (4) |
N1 | 0.0288 (5) | 0.0170 (5) | 0.0319 (6) | −0.0020 (4) | −0.0042 (4) | −0.0008 (4) |
C2 | 0.0222 (5) | 0.0201 (6) | 0.0311 (7) | −0.0013 (4) | −0.0017 (5) | 0.0008 (5) |
N3 | 0.0208 (5) | 0.0193 (5) | 0.0322 (6) | 0.0012 (4) | −0.0011 (4) | −0.0016 (4) |
C4 | 0.0208 (5) | 0.0188 (6) | 0.0335 (7) | 0.0010 (4) | −0.0060 (5) | 0.0002 (5) |
C4A | 0.0200 (5) | 0.0213 (6) | 0.0303 (7) | 0.0016 (4) | −0.0045 (5) | 0.0009 (5) |
C5 | 0.0231 (5) | 0.0247 (7) | 0.0385 (7) | 0.0003 (5) | −0.0042 (5) | 0.0036 (5) |
C6 | 0.0256 (6) | 0.0383 (8) | 0.0370 (8) | 0.0006 (5) | 0.0015 (5) | 0.0044 (6) |
C7 | 0.0283 (6) | 0.0421 (8) | 0.0326 (7) | 0.0059 (6) | −0.0002 (5) | −0.0057 (6) |
C8 | 0.0274 (6) | 0.0263 (7) | 0.0351 (7) | 0.0033 (5) | −0.0062 (5) | −0.0055 (5) |
C8A | 0.0215 (5) | 0.0219 (6) | 0.0285 (7) | 0.0018 (4) | −0.0075 (5) | 0.0007 (5) |
C9 | 0.0214 (5) | 0.0212 (6) | 0.0305 (7) | −0.0006 (4) | −0.0013 (5) | −0.0027 (5) |
C10 | 0.0224 (5) | 0.0225 (6) | 0.0311 (7) | 0.0001 (4) | −0.0002 (5) | −0.0031 (5) |
C11 | 0.0248 (5) | 0.0220 (6) | 0.0289 (7) | −0.0002 (5) | 0.0008 (5) | −0.0042 (5) |
C12 | 0.0326 (6) | 0.0285 (7) | 0.0274 (7) | −0.0013 (5) | 0.0018 (5) | −0.0019 (5) |
C13 | 0.0430 (7) | 0.0279 (7) | 0.0276 (7) | −0.0010 (6) | −0.0090 (6) | −0.0003 (5) |
C14 | 0.0308 (6) | 0.0262 (7) | 0.0394 (8) | 0.0004 (5) | −0.0122 (6) | 0.0010 (6) |
C15 | 0.0234 (6) | 0.0266 (7) | 0.0312 (7) | 0.0010 (5) | −0.0025 (5) | −0.0047 (5) |
C16 | 0.0232 (5) | 0.0192 (6) | 0.0273 (6) | 0.0000 (4) | −0.0018 (5) | 0.0032 (5) |
C17 | 0.0263 (6) | 0.0234 (6) | 0.0268 (7) | 0.0019 (5) | −0.0015 (5) | 0.0021 (5) |
C18 | 0.0287 (6) | 0.0253 (7) | 0.0320 (7) | −0.0016 (5) | −0.0070 (5) | 0.0049 (5) |
C19 | 0.0200 (5) | 0.0332 (7) | 0.0426 (8) | −0.0018 (5) | −0.0019 (5) | 0.0100 (6) |
C20 | 0.0275 (6) | 0.0312 (7) | 0.0360 (8) | 0.0004 (5) | 0.0090 (5) | 0.0063 (6) |
C21 | 0.0296 (6) | 0.0246 (7) | 0.0274 (7) | −0.0016 (5) | 0.0018 (5) | 0.0033 (5) |
O1—C11 | 1.3836 (14) | C9—H9 | 0.9500 |
O1—C14 | 1.3854 (16) | C10—C11 | 1.4551 (17) |
O2—C4 | 1.2501 (15) | C10—H10 | 0.9500 |
N1—C8A | 1.3943 (16) | C11—C12 | 1.3707 (18) |
N1—C2 | 1.4643 (17) | C12—C13 | 1.4354 (18) |
N1—H1 | 0.897 (15) | C12—H12 | 0.9500 |
C2—N3 | 1.4898 (16) | C13—C14 | 1.3540 (19) |
C2—C9 | 1.5169 (16) | C13—H13 | 0.9500 |
C2—H2 | 1.0000 | C14—H14 | 0.9500 |
N3—C4 | 1.3699 (16) | C15—C16 | 1.5334 (16) |
N3—C15 | 1.4653 (15) | C15—H15A | 0.9900 |
C4—C4A | 1.4905 (17) | C15—H15B | 0.9900 |
C4A—C5 | 1.4069 (17) | C16—C17 | 1.4017 (17) |
C4A—C8A | 1.4149 (17) | C16—C21 | 1.4051 (17) |
C5—C6 | 1.3938 (19) | C17—C18 | 1.4058 (16) |
C5—H5 | 0.9500 | C17—H17 | 0.9500 |
C6—C7 | 1.403 (2) | C18—C19 | 1.3907 (18) |
C6—H6 | 0.9500 | C18—H18 | 0.9500 |
C7—C8 | 1.3934 (19) | C19—C20 | 1.4023 (19) |
C7—H7 | 0.9500 | C19—H19 | 0.9500 |
C8—C8A | 1.4154 (17) | C20—C21 | 1.3996 (17) |
C8—H8 | 0.9500 | C20—H20 | 0.9500 |
C9—C10 | 1.3445 (17) | C21—H21 | 0.9500 |
C11—O1—C14 | 106.06 (9) | C9—C10—H10 | 116.5 |
C8A—N1—C2 | 117.92 (10) | C11—C10—H10 | 116.5 |
C8A—N1—H1 | 116.9 (9) | C12—C11—O1 | 109.83 (10) |
C2—N1—H1 | 112.2 (9) | C12—C11—C10 | 130.80 (11) |
N1—C2—N3 | 108.80 (9) | O1—C11—C10 | 119.37 (10) |
N1—C2—C9 | 113.91 (9) | C11—C12—C13 | 106.86 (11) |
N3—C2—C9 | 111.72 (9) | C11—C12—H12 | 126.6 |
N1—C2—H2 | 107.4 | C13—C12—H12 | 126.6 |
N3—C2—H2 | 107.4 | C14—C13—C12 | 106.27 (11) |
C9—C2—H2 | 107.4 | C14—C13—H13 | 126.9 |
C4—N3—C15 | 120.66 (10) | C12—C13—H13 | 126.9 |
C4—N3—C2 | 122.51 (9) | C13—C14—O1 | 110.99 (11) |
C15—N3—C2 | 116.09 (10) | C13—C14—H14 | 124.5 |
O2—C4—N3 | 121.82 (11) | O1—C14—H14 | 124.5 |
O2—C4—C4A | 122.20 (11) | N3—C15—C16 | 113.75 (10) |
N3—C4—C4A | 115.92 (10) | N3—C15—H15A | 108.8 |
C5—C4A—C8A | 120.15 (11) | C16—C15—H15A | 108.8 |
C5—C4A—C4 | 119.93 (11) | N3—C15—H15B | 108.8 |
C8A—C4A—C4 | 119.61 (10) | C16—C15—H15B | 108.8 |
C6—C5—C4A | 121.02 (12) | H15A—C15—H15B | 107.7 |
C6—C5—H5 | 119.5 | C17—C16—C21 | 118.87 (11) |
C4A—C5—H5 | 119.5 | C17—C16—C15 | 123.05 (11) |
C5—C6—C7 | 118.70 (12) | C21—C16—C15 | 118.07 (11) |
C5—C6—H6 | 120.6 | C16—C17—C18 | 120.40 (11) |
C7—C6—H6 | 120.6 | C16—C17—H17 | 119.8 |
C8—C7—C6 | 121.38 (12) | C18—C17—H17 | 119.8 |
C8—C7—H7 | 119.3 | C19—C18—C17 | 120.28 (12) |
C6—C7—H7 | 119.3 | C19—C18—H18 | 119.9 |
C7—C8—C8A | 120.18 (12) | C17—C18—H18 | 119.9 |
C7—C8—H8 | 119.9 | C18—C19—C20 | 119.82 (11) |
C8A—C8—H8 | 119.9 | C18—C19—H19 | 120.1 |
N1—C8A—C4A | 119.18 (11) | C20—C19—H19 | 120.1 |
N1—C8A—C8 | 122.12 (11) | C21—C20—C19 | 119.90 (12) |
C4A—C8A—C8 | 118.57 (11) | C21—C20—H20 | 120.1 |
C10—C9—C2 | 121.78 (10) | C19—C20—H20 | 120.1 |
C10—C9—H9 | 119.1 | C20—C21—C16 | 120.72 (12) |
C2—C9—H9 | 119.1 | C20—C21—H21 | 119.6 |
C9—C10—C11 | 127.06 (11) | C16—C21—H21 | 119.6 |
C8A—N1—C2—N3 | 45.76 (13) | C7—C8—C8A—C4A | 0.11 (17) |
C8A—N1—C2—C9 | −79.59 (13) | N1—C2—C9—C10 | −122.41 (12) |
N1—C2—N3—C4 | −38.41 (13) | N3—C2—C9—C10 | 113.81 (12) |
C9—C2—N3—C4 | 88.20 (13) | C2—C9—C10—C11 | 179.09 (11) |
N1—C2—N3—C15 | 151.40 (9) | C14—O1—C11—C12 | −0.15 (13) |
C9—C2—N3—C15 | −81.99 (12) | C14—O1—C11—C10 | 179.98 (10) |
C15—N3—C4—O2 | −1.24 (16) | C9—C10—C11—C12 | 177.81 (13) |
C2—N3—C4—O2 | −171.00 (10) | C9—C10—C11—O1 | −2.35 (18) |
C15—N3—C4—C4A | −178.63 (9) | O1—C11—C12—C13 | 0.14 (14) |
C2—N3—C4—C4A | 11.61 (15) | C10—C11—C12—C13 | 179.99 (12) |
O2—C4—C4A—C5 | 6.86 (17) | C11—C12—C13—C14 | −0.07 (14) |
N3—C4—C4A—C5 | −175.76 (10) | C12—C13—C14—O1 | −0.02 (15) |
O2—C4—C4A—C8A | −166.71 (11) | C11—O1—C14—C13 | 0.10 (14) |
N3—C4—C4A—C8A | 10.66 (15) | C4—N3—C15—C16 | 111.21 (12) |
C8A—C4A—C5—C6 | 0.12 (17) | C2—N3—C15—C16 | −78.40 (13) |
C4—C4A—C5—C6 | −173.42 (11) | N3—C15—C16—C17 | −6.96 (16) |
C4A—C5—C6—C7 | 0.08 (18) | N3—C15—C16—C21 | 174.31 (10) |
C5—C6—C7—C8 | −0.18 (19) | C21—C16—C17—C18 | −0.21 (17) |
C6—C7—C8—C8A | 0.08 (19) | C15—C16—C17—C18 | −178.93 (11) |
C2—N1—C8A—C4A | −27.67 (15) | C16—C17—C18—C19 | 0.82 (18) |
C2—N1—C8A—C8 | 156.49 (11) | C17—C18—C19—C20 | −0.48 (18) |
C5—C4A—C8A—N1 | −176.20 (10) | C18—C19—C20—C21 | −0.45 (18) |
C4—C4A—C8A—N1 | −2.63 (15) | C19—C20—C21—C16 | 1.06 (18) |
C5—C4A—C8A—C8 | −0.21 (16) | C17—C16—C21—C20 | −0.73 (17) |
C4—C4A—C8A—C8 | 173.35 (10) | C15—C16—C21—C20 | 178.06 (11) |
C7—C8—C8A—N1 | 175.97 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O2i | 0.897 (15) | 2.111 (15) | 2.9557 (14) | 156.7 (12) |
Symmetry code: (i) −x+3/2, y−1/2, z. |
C21H18N2OS | Dx = 1.323 Mg m−3 |
Mr = 346.43 | Synchrotron radiation, λ = 0.96260 Å |
Orthorhombic, Pbca | Cell parameters from 600 reflections |
a = 14.245 (3) Å | θ = 3.0–33.0° |
b = 13.855 (3) Å | µ = 0.44 mm−1 |
c = 17.629 (4) Å | T = 100 K |
V = 3479.3 (13) Å3 | Prism, yellow |
Z = 8 | 0.30 × 0.25 × 0.25 mm |
F(000) = 1456 |
Rayonix SX165 CCD diffractometer | 3024 reflections with I > 2σ(I) |
φ scan | Rint = 0.064 |
Absorption correction: multi-scan (Scala; Evans, 2006) | θmax = 38.5°, θmin = 3.1° |
Tmin = 0.870, Tmax = 0.890 | h = −15→16 |
20322 measured reflections | k = −17→17 |
3594 independent reflections | l = −15→22 |
Refinement on F2 | Primary atom site location: difference Fourier map |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.050 | Hydrogen site location: mixed |
wR(F2) = 0.147 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | w = 1/[σ2(Fo2) + (0.0669P)2 + 2.4P] where P = (Fo2 + 2Fc2)/3 |
3594 reflections | (Δ/σ)max < 0.001 |
217 parameters | Δρmax = 0.71 e Å−3 |
0 restraints | Δρmin = −0.72 e Å−3 |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.02475 (4) | 0.39698 (3) | 0.79544 (3) | 0.02956 (19) | |
O1 | 0.22041 (10) | 0.74793 (9) | 0.57892 (8) | 0.0307 (3) | |
N1 | 0.25131 (12) | 0.45803 (11) | 0.55151 (9) | 0.0249 (4) | |
H1 | 0.2524 (17) | 0.3954 (19) | 0.5496 (12) | 0.030* | |
C2 | 0.26696 (14) | 0.49600 (12) | 0.62814 (11) | 0.0244 (4) | |
H2 | 0.3287 | 0.4706 | 0.6463 | 0.029* | |
N3 | 0.27450 (11) | 0.60304 (10) | 0.62410 (9) | 0.0229 (4) | |
C4 | 0.22059 (13) | 0.65770 (13) | 0.57606 (10) | 0.0231 (4) | |
C4A | 0.16533 (14) | 0.60308 (12) | 0.51890 (10) | 0.0228 (4) | |
C5 | 0.10052 (15) | 0.65191 (14) | 0.47233 (11) | 0.0276 (4) | |
H5 | 0.0882 | 0.7184 | 0.4810 | 0.033* | |
C6 | 0.05414 (17) | 0.60404 (15) | 0.41351 (12) | 0.0333 (5) | |
H6 | 0.0103 | 0.6371 | 0.3823 | 0.040* | |
C7 | 0.07389 (16) | 0.50578 (16) | 0.40152 (12) | 0.0336 (5) | |
H7 | 0.0433 | 0.4727 | 0.3613 | 0.040* | |
C8 | 0.13683 (15) | 0.45601 (14) | 0.44685 (11) | 0.0301 (5) | |
H8 | 0.1487 | 0.3896 | 0.4376 | 0.036* | |
C8A | 0.18367 (13) | 0.50393 (12) | 0.50701 (10) | 0.0234 (4) | |
C9 | 0.19299 (14) | 0.46488 (12) | 0.68451 (11) | 0.0244 (4) | |
H9 | 0.1295 | 0.4819 | 0.6749 | 0.029* | |
C10 | 0.21254 (15) | 0.41433 (13) | 0.74758 (11) | 0.0264 (4) | |
H10 | 0.2767 | 0.3995 | 0.7566 | 0.032* | |
C11 | 0.14428 (15) | 0.37959 (13) | 0.80424 (10) | 0.0256 (4) | |
C12 | 0.16756 (16) | 0.32822 (13) | 0.87251 (11) | 0.0304 (3) | |
H12 | 0.2292 | 0.3110 | 0.8879 | 0.037* | |
C13 | 0.08295 (16) | 0.30680 (14) | 0.91398 (11) | 0.0304 (3) | |
H13 | 0.0830 | 0.2734 | 0.9610 | 0.037* | |
C14 | 0.00234 (17) | 0.33875 (14) | 0.87974 (11) | 0.0304 (3) | |
H14 | −0.0588 | 0.3298 | 0.9002 | 0.037* | |
C15 | 0.33187 (14) | 0.64888 (13) | 0.68295 (11) | 0.0265 (4) | |
H15A | 0.3163 | 0.6195 | 0.7326 | 0.032* | |
H15B | 0.3156 | 0.7183 | 0.6856 | 0.032* | |
C16 | 0.43773 (14) | 0.63919 (12) | 0.66925 (10) | 0.0224 (4) | |
C17 | 0.47531 (15) | 0.60700 (13) | 0.60001 (11) | 0.0261 (4) | |
H17 | 0.4345 | 0.5901 | 0.5595 | 0.031* | |
C18 | 0.57301 (16) | 0.59978 (14) | 0.59048 (12) | 0.0313 (5) | |
H18 | 0.5982 | 0.5765 | 0.5441 | 0.038* | |
C19 | 0.63326 (16) | 0.62705 (15) | 0.64953 (13) | 0.0345 (5) | |
H19 | 0.6993 | 0.6232 | 0.6429 | 0.041* | |
C20 | 0.59602 (16) | 0.66002 (14) | 0.71824 (13) | 0.0330 (5) | |
H20 | 0.6368 | 0.6793 | 0.7581 | 0.040* | |
C21 | 0.49895 (15) | 0.66462 (13) | 0.72819 (11) | 0.0257 (4) | |
H21 | 0.4741 | 0.6852 | 0.7755 | 0.031* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0350 (4) | 0.0244 (3) | 0.0293 (3) | 0.00022 (19) | 0.0016 (2) | 0.00190 (17) |
O1 | 0.0362 (9) | 0.0153 (6) | 0.0407 (8) | −0.0011 (6) | −0.0010 (6) | −0.0009 (5) |
N1 | 0.0316 (10) | 0.0150 (7) | 0.0280 (8) | 0.0016 (6) | 0.0027 (7) | −0.0011 (6) |
C2 | 0.0263 (11) | 0.0178 (8) | 0.0292 (9) | 0.0015 (7) | 0.0010 (8) | 0.0008 (7) |
N3 | 0.0224 (9) | 0.0165 (7) | 0.0298 (8) | −0.0006 (6) | −0.0011 (7) | −0.0017 (6) |
C4 | 0.0232 (10) | 0.0177 (8) | 0.0284 (9) | 0.0001 (7) | 0.0038 (7) | 0.0004 (6) |
C4A | 0.0245 (11) | 0.0186 (8) | 0.0253 (9) | −0.0016 (7) | 0.0043 (8) | 0.0010 (6) |
C5 | 0.0306 (11) | 0.0236 (8) | 0.0285 (9) | 0.0014 (8) | 0.0029 (8) | 0.0012 (7) |
C6 | 0.0345 (13) | 0.0369 (11) | 0.0286 (10) | 0.0016 (9) | −0.0012 (9) | 0.0013 (8) |
C7 | 0.0358 (12) | 0.0365 (11) | 0.0287 (10) | −0.0053 (9) | −0.0014 (9) | −0.0059 (8) |
C8 | 0.0363 (12) | 0.0237 (9) | 0.0305 (10) | −0.0043 (8) | 0.0063 (8) | −0.0050 (7) |
C8A | 0.0249 (10) | 0.0203 (8) | 0.0250 (9) | −0.0031 (7) | 0.0058 (7) | 0.0005 (7) |
C9 | 0.0237 (10) | 0.0201 (8) | 0.0295 (9) | 0.0012 (7) | 0.0022 (8) | −0.0011 (7) |
C10 | 0.0291 (11) | 0.0213 (8) | 0.0288 (9) | 0.0005 (7) | −0.0004 (8) | −0.0020 (7) |
C11 | 0.0325 (12) | 0.0194 (8) | 0.0248 (9) | 0.0009 (8) | −0.0008 (8) | −0.0018 (7) |
C12 | 0.0409 (7) | 0.0244 (5) | 0.0260 (5) | 0.0018 (5) | 0.0042 (5) | −0.0015 (4) |
C13 | 0.0409 (7) | 0.0244 (5) | 0.0260 (5) | 0.0018 (5) | 0.0042 (5) | −0.0015 (4) |
C14 | 0.0409 (7) | 0.0244 (5) | 0.0260 (5) | 0.0018 (5) | 0.0042 (5) | −0.0015 (4) |
C15 | 0.0272 (11) | 0.0240 (8) | 0.0283 (9) | 0.0007 (8) | 0.0004 (8) | −0.0044 (7) |
C16 | 0.0239 (10) | 0.0173 (8) | 0.0260 (9) | −0.0003 (7) | −0.0001 (7) | 0.0028 (6) |
C17 | 0.0282 (12) | 0.0220 (9) | 0.0281 (10) | −0.0006 (7) | 0.0025 (8) | 0.0037 (7) |
C18 | 0.0339 (12) | 0.0258 (9) | 0.0341 (10) | 0.0020 (8) | 0.0087 (9) | 0.0066 (7) |
C19 | 0.0259 (11) | 0.0284 (9) | 0.0492 (12) | 0.0014 (8) | 0.0031 (10) | 0.0107 (9) |
C20 | 0.0327 (13) | 0.0254 (9) | 0.0409 (11) | −0.0002 (8) | −0.0079 (9) | 0.0048 (8) |
C21 | 0.0279 (11) | 0.0194 (8) | 0.0297 (9) | 0.0011 (8) | −0.0022 (8) | 0.0021 (7) |
S1—C14 | 1.721 (2) | C9—H9 | 0.9500 |
S1—C11 | 1.727 (2) | C10—C11 | 1.475 (3) |
O1—C4 | 1.251 (2) | C10—H10 | 0.9500 |
N1—C8A | 1.396 (3) | C11—C12 | 1.437 (3) |
N1—C2 | 1.467 (2) | C12—C13 | 1.440 (3) |
N1—H1 | 0.87 (3) | C12—H12 | 0.9500 |
C2—N3 | 1.489 (2) | C13—C14 | 1.371 (3) |
C2—C9 | 1.511 (3) | C13—H13 | 0.9500 |
C2—H2 | 1.0000 | C14—H14 | 0.9500 |
N3—C4 | 1.371 (2) | C15—C16 | 1.533 (3) |
N3—C15 | 1.465 (2) | C15—H15A | 0.9900 |
C4—C4A | 1.486 (3) | C15—H15B | 0.9900 |
C4A—C5 | 1.409 (3) | C16—C21 | 1.402 (3) |
C4A—C8A | 1.414 (2) | C16—C17 | 1.406 (3) |
C5—C6 | 1.397 (3) | C17—C18 | 1.405 (3) |
C5—H5 | 0.9500 | C17—H17 | 0.9500 |
C6—C7 | 1.406 (3) | C18—C19 | 1.401 (3) |
C6—H6 | 0.9500 | C18—H18 | 0.9500 |
C7—C8 | 1.385 (3) | C19—C20 | 1.399 (3) |
C7—H7 | 0.9500 | C19—H19 | 0.9500 |
C8—C8A | 1.418 (3) | C20—C21 | 1.395 (3) |
C8—H8 | 0.9500 | C20—H20 | 0.9500 |
C9—C10 | 1.343 (3) | C21—H21 | 0.9500 |
C14—S1—C11 | 92.28 (10) | C9—C10—H10 | 116.8 |
C8A—N1—C2 | 117.34 (15) | C11—C10—H10 | 116.8 |
C8A—N1—H1 | 116.5 (16) | C12—C11—C10 | 125.22 (19) |
C2—N1—H1 | 113.1 (15) | C12—C11—S1 | 111.83 (15) |
N1—C2—N3 | 108.92 (14) | C10—C11—S1 | 122.94 (14) |
N1—C2—C9 | 113.41 (16) | C11—C12—C13 | 109.51 (19) |
N3—C2—C9 | 111.47 (15) | C11—C12—H12 | 125.2 |
N1—C2—H2 | 107.6 | C13—C12—H12 | 125.2 |
N3—C2—H2 | 107.6 | C14—C13—C12 | 114.26 (18) |
C9—C2—H2 | 107.6 | C14—C13—H13 | 122.9 |
C4—N3—C15 | 120.68 (15) | C12—C13—H13 | 122.9 |
C4—N3—C2 | 122.63 (15) | C13—C14—S1 | 112.11 (17) |
C15—N3—C2 | 115.99 (15) | C13—C14—H14 | 123.9 |
O1—C4—N3 | 121.87 (17) | S1—C14—H14 | 123.9 |
O1—C4—C4A | 122.35 (17) | N3—C15—C16 | 113.52 (15) |
N3—C4—C4A | 115.74 (15) | N3—C15—H15A | 108.9 |
C5—C4A—C8A | 120.09 (17) | C16—C15—H15A | 108.9 |
C5—C4A—C4 | 119.86 (16) | N3—C15—H15B | 108.9 |
C8A—C4A—C4 | 119.83 (17) | C16—C15—H15B | 108.9 |
C6—C5—C4A | 120.97 (18) | H15A—C15—H15B | 107.7 |
C6—C5—H5 | 119.5 | C21—C16—C17 | 119.12 (18) |
C4A—C5—H5 | 119.5 | C21—C16—C15 | 118.25 (17) |
C5—C6—C7 | 118.5 (2) | C17—C16—C15 | 122.63 (17) |
C5—C6—H6 | 120.8 | C18—C17—C16 | 120.24 (19) |
C7—C6—H6 | 120.8 | C18—C17—H17 | 119.9 |
C8—C7—C6 | 121.66 (19) | C16—C17—H17 | 119.9 |
C8—C7—H7 | 119.2 | C19—C18—C17 | 119.90 (19) |
C6—C7—H7 | 119.2 | C19—C18—H18 | 120.0 |
C7—C8—C8A | 120.21 (18) | C17—C18—H18 | 120.0 |
C7—C8—H8 | 119.9 | C20—C19—C18 | 119.9 (2) |
C8A—C8—H8 | 119.9 | C20—C19—H19 | 120.0 |
N1—C8A—C4A | 119.13 (17) | C18—C19—H19 | 120.0 |
N1—C8A—C8 | 122.14 (16) | C21—C20—C19 | 120.0 (2) |
C4A—C8A—C8 | 118.60 (17) | C21—C20—H20 | 120.0 |
C10—C9—C2 | 123.27 (19) | C19—C20—H20 | 120.0 |
C10—C9—H9 | 118.4 | C20—C21—C16 | 120.79 (19) |
C2—C9—H9 | 118.4 | C20—C21—H21 | 119.6 |
C9—C10—C11 | 126.45 (19) | C16—C21—H21 | 119.6 |
C8A—N1—C2—N3 | −46.4 (2) | C7—C8—C8A—C4A | −0.6 (3) |
C8A—N1—C2—C9 | 78.4 (2) | N1—C2—C9—C10 | 120.5 (2) |
N1—C2—N3—C4 | 37.7 (2) | N3—C2—C9—C10 | −116.17 (19) |
C9—C2—N3—C4 | −88.2 (2) | C2—C9—C10—C11 | −178.56 (17) |
N1—C2—N3—C15 | −151.91 (16) | C9—C10—C11—C12 | −177.92 (18) |
C9—C2—N3—C15 | 82.2 (2) | C9—C10—C11—S1 | 2.0 (3) |
C15—N3—C4—O1 | 2.2 (3) | C14—S1—C11—C12 | 0.19 (15) |
C2—N3—C4—O1 | 172.24 (17) | C14—S1—C11—C10 | −179.70 (16) |
C15—N3—C4—C4A | −179.85 (16) | C10—C11—C12—C13 | 179.56 (17) |
C2—N3—C4—C4A | −9.9 (3) | S1—C11—C12—C13 | −0.3 (2) |
O1—C4—C4A—C5 | −8.7 (3) | C11—C12—C13—C14 | 0.4 (2) |
N3—C4—C4A—C5 | 173.42 (17) | C12—C13—C14—S1 | −0.2 (2) |
O1—C4—C4A—C8A | 165.94 (18) | C11—S1—C14—C13 | 0.02 (16) |
N3—C4—C4A—C8A | −11.9 (3) | C4—N3—C15—C16 | −112.23 (18) |
C8A—C4A—C5—C6 | −0.6 (3) | C2—N3—C15—C16 | 77.1 (2) |
C4—C4A—C5—C6 | 174.00 (18) | N3—C15—C16—C21 | −168.65 (15) |
C4A—C5—C6—C7 | −0.3 (3) | N3—C15—C16—C17 | 12.1 (2) |
C5—C6—C7—C8 | 0.7 (3) | C21—C16—C17—C18 | 0.5 (3) |
C6—C7—C8—C8A | −0.3 (3) | C15—C16—C17—C18 | 179.79 (16) |
C2—N1—C8A—C4A | 28.7 (2) | C16—C17—C18—C19 | −1.6 (3) |
C2—N1—C8A—C8 | −155.42 (18) | C17—C18—C19—C20 | 1.0 (3) |
C5—C4A—C8A—N1 | 177.06 (17) | C18—C19—C20—C21 | 0.8 (3) |
C4—C4A—C8A—N1 | 2.4 (3) | C19—C20—C21—C16 | −1.9 (3) |
C5—C4A—C8A—C8 | 1.1 (3) | C17—C16—C21—C20 | 1.2 (3) |
C4—C4A—C8A—C8 | −173.56 (17) | C15—C16—C21—C20 | −178.09 (17) |
C7—C8—C8A—N1 | −176.50 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.87 (3) | 2.14 (3) | 2.978 (2) | 161 (2) |
Symmetry code: (i) −x+1/2, y−1/2, z. |
Funding information
Funding for this research was provided by the Ministry of Education and Science of the Russian Federation (award No. 4.1154.2017/4.6) (X-ray diffraction study) and by the Russian Foundation for Basic Research (grant No. 16–03-00125) (synthetic part).
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