organic compounds
6-Hydroxy-4-(pyridin-3-yl)-5-(2-thienylcarbonyl)-6-trifluoromethyl-3,4,5,6-tetrahydropyrimidin-2(1H)-one
aCollege of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan Province, 461000, People's Republic of China
*Correspondence e-mail: actaeli@gmail.com
In the title compound, C15H12F3N3O3S, the pyrimidine ring adopts a half-chair conformation with the mean plane formed by the ring atoms excluding the C atom bonded to thiophene-2-carbonyl group lying nearly perpendicular to the pyridine and thiophene rings, making dihedral angles of 84.91 (4) and 87.40 (5)°, respectively. The dihedral angle between the pyridine and thiophene rings is 54.44 (5)°. The is stabilized by intermolecular O—H⋯O and N—H⋯N hydrogen bonds and weak C—H⋯O interactions further consolidate the structure.
Related literature
For the bioactivity of dihydropyrimidines, see: Cochran et al. (2005); Moran et al. (2007); Zorkun et al. (2006). For the bioactivity of organofluorine compounds, see: Ulrich (2004). For a related stucture, see: Yang et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear-SM Expert (Rigaku/MSC, 2009); cell CrystalClear-SM Expert; data reduction: CrystalClear-SM Expert; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalStructure (Rigaku/MSC, 2009); software used to prepare material for publication: CrystalStructure.
Supporting information
https://doi.org/10.1107/S1600536810041085/pv2334sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810041085/pv2334Isup2.hkl
The title compound was synthesized by refluxing for 3 h a stirred solution of 3-pyridinaldehyde (0.22 g, 2 mmol), 4,4,4-trifluoro-1-(thiophen-2-yl)butane- 1,3-dione (0.51 g, 2.3 mmol) and urea (0.18 g, 3 mmol) in 3 ml of anhydrous ethanol; the reaction was catalyzed by sulfamic acid (0.06 g). The solvent was evaporated in vacuo and the residue was washed with water. The title compound was recrystallized from 50% aqueous ethanol and single crystals of (I) were obtained by slow evaporation.
Hydrogen atoms involved in hydrogen-bonding inetractions were located from a difference Fourier map and their positional and isotropic displacement parameters were refined. The other H atoms were placed in calculated positions, with C—H(aromatic) = 0.95 Å and C—H(aliphatic) = 1.00 Å, and treated as riding, with Uiso(H) = 1.2Ueq(C).
Dihydropyrimidine (DHPM) derivatives can be used as potential calcium channel blockers (Zorkun et al., 2006), inhibitors of mitotic kinesin Eg5 (a member of the Kinesin-5 subclass of kinesins) for treating cancer (Cochran et al., 2005) and as TRPA1 (Transient Receptor Potential cation channel, subfamily A, member 1) modulators for treating pain (Moran et al., 2007). In addition, compounds that contain fluorine have special bioactivity, for example flumioxazin is a widely used herbicide (Ulrich, 2004). This led us to focus our attention on the synthesis and bioactivity of these important fused perfluoroalkylated
During the synthesis of DHPM derivatives, the title compound, an intermediate (I) was isolated and its structure established by X-ray diffraction method, in order to elucidate the reaction mechanism.In the structure of the title molecule, the dihydropyrimidine ring adopts a half-chair conformation; the atoms C1/C2/C3/N1/N2 are nearly coplanar and the plane is nearly perpendicular with pyridine and thiophene rings with dihedral angles 84.91 (4) and 87.40 (5)°, respectively. The dihedral angle between the pyridine ring and the thiophene ring is 54.44 (5)°. The
is stabilized by intermolecular hydrogen bonds of the types O—H···O and N—H···N; there are also weak hydrogen bonding interactions of the type C—H···O present in the structure (Table 1). For a related to the title compound, see: Yang et al., (2009).For the bioactivity of dihydropyrimidines, see: Cochran et al. (2005); Moran et al. (2007); Zorkun et al. (2006). For the bioactivity of organofluorine compounds, see: Ulrich (2004). For a related stucture, see: Yang et al. (2009).
Data collection: CrystalClear-SM Expert (Rigaku/MSC, 2009); cell
CrystalClear-SM Expert (Rigaku/MSC, 2009); data reduction: CrystalClear-SM Expert (Rigaku/MSC, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalStructure (Rigaku/MSC, 2009); software used to prepare material for publication: CrystalStructure (Rigaku/MSC, 2009).Fig. 1. Molecular configuration and atom numbering scheme for (I), with displacement ellipsoids drawn at the 30% probability level. | |
Fig. 2. The packing diagram of the title compound. |
C15H12F3N3O3S | F(000) = 1520 |
Mr = 371.34 | Dx = 1.579 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71075 Å |
Hall symbol: -C 2yc | Cell parameters from 5438 reflections |
a = 29.694 (3) Å | θ = 1.7–28.0° |
b = 5.9710 (8) Å | µ = 0.26 mm−1 |
c = 17.6910 (16) Å | T = 113 K |
β = 95.223 (8)° | Prism, colorless |
V = 3123.6 (6) Å3 | 0.26 × 0.22 × 0.20 mm |
Z = 8 |
Rigaku Saturn724 CCD diffractometer | 3707 independent reflections |
Radiation source: rotating anode | 2888 reflections with I > 2.0 σ(I) |
Multilayer monochromator | Rint = 0.056 |
Detector resolution: 14.222 pixels mm-1 | θmax = 27.9°, θmin = 2.3° |
ω scans | h = −38→37 |
Absorption correction: multi-scan (CrystalClear-SM Expert; Rigaku/MSC, 2009) | k = −7→7 |
Tmin = 0.935, Tmax = 0.950 | l = −23→23 |
15077 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.036 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.098 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0496P)2] where P = (Fo2 + 2Fc2)/3 |
3707 reflections | (Δ/σ)max = 0.001 |
238 parameters | Δρmax = 0.36 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C15H12F3N3O3S | V = 3123.6 (6) Å3 |
Mr = 371.34 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 29.694 (3) Å | µ = 0.26 mm−1 |
b = 5.9710 (8) Å | T = 113 K |
c = 17.6910 (16) Å | 0.26 × 0.22 × 0.20 mm |
β = 95.223 (8)° |
Rigaku Saturn724 CCD diffractometer | 3707 independent reflections |
Absorption correction: multi-scan (CrystalClear-SM Expert; Rigaku/MSC, 2009) | 2888 reflections with I > 2.0 σ(I) |
Tmin = 0.935, Tmax = 0.950 | Rint = 0.056 |
15077 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 0 restraints |
wR(F2) = 0.098 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.36 e Å−3 |
3707 reflections | Δρmin = −0.23 e Å−3 |
238 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.026595 (14) | 0.12707 (8) | 0.92814 (2) | 0.03528 (14) | |
F1 | 0.10963 (3) | −0.11784 (17) | 0.62064 (4) | 0.0313 (2) | |
F2 | 0.06951 (3) | −0.11496 (17) | 0.71617 (5) | 0.0298 (2) | |
F3 | 0.09202 (3) | 0.19531 (16) | 0.67005 (5) | 0.0302 (2) | |
O1 | 0.15452 (3) | −0.25213 (17) | 0.75794 (5) | 0.0181 (2) | |
O2 | 0.25389 (3) | 0.21588 (17) | 0.70458 (5) | 0.0176 (2) | |
O3 | 0.10702 (3) | −0.12933 (18) | 0.89515 (5) | 0.0238 (2) | |
N1 | 0.18320 (4) | 0.0743 (2) | 0.70261 (6) | 0.0155 (3) | |
N2 | 0.21958 (4) | 0.2166 (2) | 0.81451 (6) | 0.0153 (3) | |
N3 | 0.19968 (4) | 0.2310 (2) | 1.07057 (6) | 0.0179 (3) | |
C1 | 0.14728 (4) | −0.0243 (2) | 0.74123 (7) | 0.0146 (3) | |
C2 | 0.22112 (4) | 0.1687 (2) | 0.74020 (7) | 0.0143 (3) | |
C3 | 0.18652 (4) | 0.1181 (2) | 0.86052 (7) | 0.0136 (3) | |
H3 | 0.1952 | −0.0410 | 0.8719 | 0.016* | |
C4 | 0.14098 (4) | 0.1215 (2) | 0.81197 (7) | 0.0141 (3) | |
H4 | 0.1345 | 0.2788 | 0.7949 | 0.017* | |
C5 | 0.10424 (5) | −0.0160 (3) | 0.68637 (7) | 0.0211 (3) | |
C6 | 0.18514 (4) | 0.2436 (2) | 0.93467 (7) | 0.0144 (3) | |
C7 | 0.16718 (4) | 0.4565 (3) | 0.93907 (7) | 0.0178 (3) | |
H7 | 0.1565 | 0.5349 | 0.8943 | 0.021* | |
C8 | 0.16500 (5) | 0.5540 (3) | 1.01013 (7) | 0.0208 (3) | |
H8 | 0.1524 | 0.6990 | 1.0148 | 0.025* | |
C9 | 0.18153 (5) | 0.4355 (3) | 1.07377 (7) | 0.0201 (3) | |
H9 | 0.1799 | 0.5025 | 1.1222 | 0.024* | |
C10 | 0.20114 (4) | 0.1383 (2) | 1.00190 (7) | 0.0153 (3) | |
H10 | 0.2138 | −0.0072 | 0.9990 | 0.018* | |
C11 | 0.10371 (4) | 0.0461 (3) | 0.85989 (7) | 0.0168 (3) | |
C12 | 0.06578 (5) | 0.1986 (3) | 0.86639 (7) | 0.0206 (3) | |
C13 | 0.05608 (5) | 0.4038 (3) | 0.83352 (9) | 0.0255 (3) | |
H13 | 0.0738 | 0.4723 | 0.7978 | 0.031* | |
C14 | 0.01670 (5) | 0.5012 (3) | 0.85897 (10) | 0.0372 (4) | |
H14 | 0.0049 | 0.6425 | 0.8423 | 0.045* | |
C15 | −0.00227 (5) | 0.3696 (3) | 0.90984 (10) | 0.0404 (5) | |
H15 | −0.0289 | 0.4088 | 0.9328 | 0.048* | |
H1 | 0.1888 (5) | 0.007 (3) | 0.6611 (9) | 0.024 (4)* | |
H2 | 0.2439 (5) | 0.260 (3) | 0.8390 (9) | 0.020 (4)* | |
H5 | 0.1814 (6) | −0.273 (3) | 0.7674 (10) | 0.031 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0254 (2) | 0.0467 (3) | 0.0363 (2) | −0.00599 (19) | 0.01643 (16) | −0.00842 (19) |
F1 | 0.0228 (4) | 0.0510 (7) | 0.0189 (4) | 0.0021 (4) | −0.0042 (3) | −0.0141 (4) |
F2 | 0.0159 (4) | 0.0449 (7) | 0.0283 (5) | −0.0080 (4) | 0.0001 (3) | −0.0047 (4) |
F3 | 0.0265 (5) | 0.0355 (6) | 0.0266 (4) | 0.0091 (4) | −0.0088 (3) | 0.0028 (4) |
O1 | 0.0159 (5) | 0.0168 (6) | 0.0216 (5) | −0.0013 (4) | 0.0015 (4) | −0.0016 (4) |
O2 | 0.0170 (5) | 0.0202 (6) | 0.0161 (4) | −0.0023 (4) | 0.0039 (3) | 0.0002 (4) |
O3 | 0.0260 (5) | 0.0226 (6) | 0.0233 (5) | −0.0020 (4) | 0.0059 (4) | 0.0052 (4) |
N1 | 0.0154 (5) | 0.0206 (7) | 0.0107 (5) | −0.0008 (5) | 0.0019 (4) | −0.0017 (4) |
N2 | 0.0140 (6) | 0.0198 (7) | 0.0121 (5) | −0.0037 (5) | 0.0005 (4) | −0.0012 (4) |
N3 | 0.0187 (6) | 0.0215 (7) | 0.0133 (5) | −0.0030 (5) | 0.0008 (4) | 0.0005 (5) |
C1 | 0.0137 (6) | 0.0152 (8) | 0.0147 (6) | 0.0003 (5) | 0.0002 (4) | −0.0008 (5) |
C2 | 0.0163 (6) | 0.0119 (7) | 0.0146 (6) | 0.0006 (5) | 0.0005 (5) | 0.0010 (5) |
C3 | 0.0150 (6) | 0.0140 (7) | 0.0119 (6) | −0.0006 (5) | 0.0013 (4) | 0.0006 (5) |
C4 | 0.0135 (6) | 0.0150 (8) | 0.0137 (6) | 0.0001 (5) | 0.0011 (5) | 0.0003 (5) |
C5 | 0.0180 (7) | 0.0274 (9) | 0.0176 (6) | 0.0000 (6) | −0.0003 (5) | −0.0035 (6) |
C6 | 0.0143 (6) | 0.0151 (8) | 0.0137 (6) | −0.0026 (6) | 0.0016 (4) | −0.0005 (5) |
C7 | 0.0209 (7) | 0.0178 (8) | 0.0146 (6) | −0.0008 (6) | 0.0011 (5) | 0.0015 (5) |
C8 | 0.0257 (7) | 0.0166 (8) | 0.0201 (6) | −0.0006 (6) | 0.0031 (5) | −0.0027 (5) |
C9 | 0.0237 (7) | 0.0222 (9) | 0.0146 (6) | −0.0025 (6) | 0.0029 (5) | −0.0033 (5) |
C10 | 0.0144 (6) | 0.0162 (8) | 0.0155 (6) | −0.0013 (5) | 0.0024 (5) | 0.0008 (5) |
C11 | 0.0165 (6) | 0.0191 (8) | 0.0147 (6) | −0.0028 (6) | 0.0009 (5) | −0.0023 (5) |
C12 | 0.0152 (7) | 0.0270 (9) | 0.0197 (6) | −0.0026 (6) | 0.0024 (5) | −0.0057 (6) |
C13 | 0.0197 (7) | 0.0257 (9) | 0.0307 (8) | 0.0054 (7) | 0.0006 (6) | −0.0044 (6) |
C14 | 0.0235 (8) | 0.0365 (12) | 0.0499 (10) | 0.0109 (8) | −0.0060 (7) | −0.0172 (8) |
C15 | 0.0178 (8) | 0.0559 (14) | 0.0483 (10) | −0.0007 (8) | 0.0075 (7) | −0.0310 (9) |
S1—C15 | 1.699 (2) | C3—C4 | 1.5345 (17) |
S1—C12 | 1.7208 (15) | C3—H3 | 1.0000 |
F1—C5 | 1.3347 (15) | C4—C11 | 1.5222 (17) |
F2—C5 | 1.3379 (16) | C4—H4 | 1.0000 |
F3—C5 | 1.3370 (18) | C6—C7 | 1.383 (2) |
O1—C1 | 1.4047 (17) | C6—C10 | 1.3902 (17) |
O1—H5 | 0.81 (2) | C7—C8 | 1.3922 (18) |
O2—C2 | 1.2390 (16) | C7—H7 | 0.9500 |
O3—C11 | 1.2187 (17) | C8—C9 | 1.3813 (19) |
N1—C2 | 1.3753 (17) | C8—H8 | 0.9500 |
N1—C1 | 1.4435 (17) | C9—H9 | 0.9500 |
N1—H1 | 0.87 (2) | C10—H10 | 0.9500 |
N2—C2 | 1.3501 (16) | C11—C12 | 1.461 (2) |
N2—C3 | 1.4553 (16) | C12—C13 | 1.375 (2) |
N2—H2 | 0.85 (2) | C13—C14 | 1.416 (2) |
N3—C9 | 1.3379 (19) | C13—H13 | 0.9500 |
N3—C10 | 1.3393 (16) | C14—C15 | 1.355 (3) |
C1—C5 | 1.5337 (18) | C14—H14 | 0.9500 |
C1—C4 | 1.5495 (17) | C15—H15 | 0.9500 |
C3—C6 | 1.5145 (17) | ||
C15—S1—C12 | 91.49 (9) | F1—C5—C1 | 112.19 (11) |
C1—O1—H5 | 108.7 (13) | F3—C5—C1 | 111.18 (12) |
C2—N1—C1 | 123.09 (10) | F2—C5—C1 | 111.36 (11) |
C2—N1—H1 | 112.9 (10) | C7—C6—C10 | 118.08 (12) |
C1—N1—H1 | 114.8 (11) | C7—C6—C3 | 122.98 (11) |
C2—N2—C3 | 122.91 (11) | C10—C6—C3 | 118.90 (12) |
C2—N2—H2 | 117.3 (11) | C6—C7—C8 | 119.02 (12) |
C3—N2—H2 | 115.1 (11) | C6—C7—H7 | 120.5 |
C9—N3—C10 | 117.51 (11) | C8—C7—H7 | 120.5 |
O1—C1—N1 | 112.90 (10) | C9—C8—C7 | 118.65 (14) |
O1—C1—C5 | 105.49 (11) | C9—C8—H8 | 120.7 |
N1—C1—C5 | 107.24 (10) | C7—C8—H8 | 120.7 |
O1—C1—C4 | 113.67 (10) | N3—C9—C8 | 123.19 (12) |
N1—C1—C4 | 107.58 (11) | N3—C9—H9 | 118.4 |
C5—C1—C4 | 109.76 (11) | C8—C9—H9 | 118.4 |
O2—C2—N2 | 123.02 (12) | N3—C10—C6 | 123.54 (13) |
O2—C2—N1 | 119.57 (11) | N3—C10—H10 | 118.2 |
N2—C2—N1 | 117.31 (12) | C6—C10—H10 | 118.2 |
N2—C3—C6 | 110.93 (11) | O3—C11—C12 | 121.48 (13) |
N2—C3—C4 | 106.64 (10) | O3—C11—C4 | 120.69 (12) |
C6—C3—C4 | 112.73 (11) | C12—C11—C4 | 117.68 (13) |
N2—C3—H3 | 108.8 | C13—C12—C11 | 130.93 (13) |
C6—C3—H3 | 108.8 | C13—C12—S1 | 111.21 (11) |
C4—C3—H3 | 108.8 | C11—C12—S1 | 117.77 (11) |
C11—C4—C3 | 109.42 (10) | C12—C13—C14 | 112.26 (16) |
C11—C4—C1 | 115.54 (11) | C12—C13—H13 | 123.9 |
C3—C4—C1 | 106.24 (10) | C14—C13—H13 | 123.9 |
C11—C4—H4 | 108.5 | C15—C14—C13 | 112.22 (17) |
C3—C4—H4 | 108.5 | C15—C14—H14 | 123.9 |
C1—C4—H4 | 108.5 | C13—C14—H14 | 123.9 |
F1—C5—F3 | 107.07 (11) | C14—C15—S1 | 112.82 (13) |
F1—C5—F2 | 107.45 (12) | C14—C15—H15 | 123.6 |
F3—C5—F2 | 107.35 (11) | S1—C15—H15 | 123.6 |
C2—N1—C1—O1 | −88.51 (15) | N2—C3—C6—C7 | 71.30 (16) |
C2—N1—C1—C5 | 155.73 (13) | C4—C3—C6—C7 | −48.22 (17) |
C2—N1—C1—C4 | 37.72 (17) | N2—C3—C6—C10 | −111.02 (13) |
C3—N2—C2—O2 | −165.46 (13) | C4—C3—C6—C10 | 129.46 (13) |
C3—N2—C2—N1 | 18.18 (19) | C10—C6—C7—C8 | −1.32 (19) |
C1—N1—C2—O2 | 167.89 (12) | C3—C6—C7—C8 | 176.37 (12) |
C1—N1—C2—N2 | −15.6 (2) | C6—C7—C8—C9 | 1.0 (2) |
C2—N2—C3—C6 | −165.76 (12) | C10—N3—C9—C8 | −0.8 (2) |
C2—N2—C3—C4 | −42.66 (17) | C7—C8—C9—N3 | 0.1 (2) |
N2—C3—C4—C11 | −173.34 (11) | C9—N3—C10—C6 | 0.38 (19) |
C6—C3—C4—C11 | −51.37 (15) | C7—C6—C10—N3 | 0.7 (2) |
N2—C3—C4—C1 | 61.28 (13) | C3—C6—C10—N3 | −177.13 (12) |
C6—C3—C4—C1 | −176.75 (11) | C3—C4—C11—O3 | −52.53 (17) |
O1—C1—C4—C11 | −55.20 (14) | C1—C4—C11—O3 | 67.28 (16) |
N1—C1—C4—C11 | 179.03 (10) | C3—C4—C11—C12 | 123.10 (12) |
C5—C1—C4—C11 | 62.66 (15) | C1—C4—C11—C12 | −117.09 (13) |
O1—C1—C4—C3 | 66.33 (13) | O3—C11—C12—C13 | 178.48 (14) |
N1—C1—C4—C3 | −59.43 (13) | C4—C11—C12—C13 | 2.9 (2) |
C5—C1—C4—C3 | −175.80 (11) | O3—C11—C12—S1 | 2.12 (18) |
O1—C1—C5—F1 | −64.29 (14) | C4—C11—C12—S1 | −173.47 (9) |
N1—C1—C5—F1 | 56.29 (16) | C15—S1—C12—C13 | 0.00 (12) |
C4—C1—C5—F1 | 172.87 (12) | C15—S1—C12—C11 | 177.05 (11) |
O1—C1—C5—F3 | 175.84 (10) | C11—C12—C13—C14 | −176.56 (14) |
N1—C1—C5—F3 | −63.58 (14) | S1—C12—C13—C14 | −0.02 (16) |
C4—C1—C5—F3 | 53.01 (15) | C12—C13—C14—C15 | 0.03 (19) |
O1—C1—C5—F2 | 56.18 (14) | C13—C14—C15—S1 | −0.04 (18) |
N1—C1—C5—F2 | 176.76 (11) | C12—S1—C15—C14 | 0.02 (13) |
C4—C1—C5—F2 | −66.65 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H5···O2i | 0.81 (2) | 1.94 (2) | 2.7466 (14) | 173 (2) |
N2—H2···N3ii | 0.85 (2) | 2.21 (2) | 3.0153 (15) | 159 (2) |
N1—H1···N3iii | 0.87 (2) | 2.19 (2) | 3.0378 (16) | 167 (2) |
C3—H3···O1 | 1.00 | 2.58 | 2.961 (2) | 102 |
C3—H3···O2i | 1.00 | 2.57 | 3.255 (2) | 126 |
C7—H7···O3iv | 0.95 | 2.49 | 3.108 (2) | 123 |
Symmetry codes: (i) −x+1/2, y−1/2, −z+3/2; (ii) −x+1/2, −y+1/2, −z+2; (iii) x, −y, z−1/2; (iv) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C15H12F3N3O3S |
Mr | 371.34 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 113 |
a, b, c (Å) | 29.694 (3), 5.9710 (8), 17.6910 (16) |
β (°) | 95.223 (8) |
V (Å3) | 3123.6 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.26 |
Crystal size (mm) | 0.26 × 0.22 × 0.20 |
Data collection | |
Diffractometer | Rigaku Saturn724 CCD |
Absorption correction | Multi-scan (CrystalClear-SM Expert; Rigaku/MSC, 2009) |
Tmin, Tmax | 0.935, 0.950 |
No. of measured, independent and observed [I > 2.0 σ(I)] reflections | 15077, 3707, 2888 |
Rint | 0.056 |
(sin θ/λ)max (Å−1) | 0.658 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.098, 1.04 |
No. of reflections | 3707 |
No. of parameters | 238 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.36, −0.23 |
Computer programs: CrystalClear-SM Expert (Rigaku/MSC, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), CrystalStructure (Rigaku/MSC, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H5···O2i | 0.81 (2) | 1.94 (2) | 2.7466 (14) | 173 (2) |
N2—H2···N3ii | 0.85 (2) | 2.21 (2) | 3.0153 (15) | 159 (2) |
N1—H1···N3iii | 0.87 (2) | 2.19 (2) | 3.0378 (16) | 167 (2) |
C3—H3···O2i | 1.00 | 2.57 | 3.255 (2) | 126 |
C7—H7···O3iv | 0.95 | 2.49 | 3.108 (2) | 123 |
Symmetry codes: (i) −x+1/2, y−1/2, −z+3/2; (ii) −x+1/2, −y+1/2, −z+2; (iii) x, −y, z−1/2; (iv) x, y+1, z. |
Acknowledgements
This work was supported by the Natural Science Foundation of Henan Province (grant No. 082300420110) and the Natural Science Foundation of Henan Province Education Department (grant No. 2007150036).
References
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Dihydropyrimidine (DHPM) derivatives can be used as potential calcium channel blockers (Zorkun et al., 2006), inhibitors of mitotic kinesin Eg5 (a member of the Kinesin-5 subclass of kinesins) for treating cancer (Cochran et al., 2005) and as TRPA1 (Transient Receptor Potential cation channel, subfamily A, member 1) modulators for treating pain (Moran et al., 2007). In addition, compounds that contain fluorine have special bioactivity, for example flumioxazin is a widely used herbicide (Ulrich, 2004). This led us to focus our attention on the synthesis and bioactivity of these important fused perfluoroalkylated heterocyclic compounds. During the synthesis of DHPM derivatives, the title compound, an intermediate (I) was isolated and its structure established by X-ray diffraction method, in order to elucidate the reaction mechanism.
In the structure of the title molecule, the dihydropyrimidine ring adopts a half-chair conformation; the atoms C1/C2/C3/N1/N2 are nearly coplanar and the plane is nearly perpendicular with pyridine and thiophene rings with dihedral angles 84.91 (4) and 87.40 (5)°, respectively. The dihedral angle between the pyridine ring and the thiophene ring is 54.44 (5)°. The crystal structure is stabilized by intermolecular hydrogen bonds of the types O—H···O and N—H···N; there are also weak hydrogen bonding interactions of the type C—H···O present in the structure (Table 1). For a crystal structure related to the title compound, see: Yang et al., (2009).