organic compounds
4-(3-Fluorophenyl)-6-hydroxy-5-(thiophen-2-ylcarbonyl)-6-trifluoromethyl-1,3-diazinan-2-one
aCollege of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan Province 461000, People's Republic of China, and bInstitute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000, People's Republic of China
*Correspondence e-mail: xuchang_hq@yahoo.com.cn
In the title compound, C16H12F4N2O3S, the pyrimidine ring adopts a half-chair conformation; the mean plane formed by the ring atoms excluding the C atom bonded to the thiophen-2-ylcarbonyl group has an r.m.s. deviation of 0.059 Å. The dihedral angle between the benzene and thiophene rings is 62.26 (7)°. The molecular conformation is stabilized by an intramolecular O—H⋯O hydrogen bond, generating an S(6) ring. In the crystal, adjacent molecules are connected via a centrosymmetric R22(6) motif, formed by N—H⋯O hydrogen bonds.
Related literature
For the bioactivity of dihydropyrimidines, see: Cochran et al. (2005); Zorkun et al. (2006); Moran et al. (2007). For the bioactivity of organofluorine compounds, see: Hermann et al. (2003); Ulrich (2004). For a related structure, see: Mosslemin et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2009); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: CrystalStructure (Rigaku, 2009).
Supporting information
10.1107/S1600536811006933/nk2083sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811006933/nk2083Isup2.hkl
The title compound was synthesized refluxing for 3 h a stirred solution of 3-fluorobenzaldehyde (0.24 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 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 interactions were located by difference methods and their positional and isotropic displacement parameters were refined. 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).
Data collection: CrystalClear (Rigaku, 2009); cell
CrystalClear (Rigaku, 2009); data reduction: CrystalClear (Rigaku, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: CrystalStructure (Rigaku, 2009).Fig. 1. Molecular configuration and atom numbering scheme for (I), with displacement ellipsoids drawn at the 50% probability level. |
C16H12F4N2O3S | Z = 2 |
Mr = 388.34 | F(000) = 396 |
Triclinic, P1 | Dx = 1.621 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.6032 (10) Å | Cell parameters from 3248 reflections |
b = 10.4541 (16) Å | θ = 1.7–31.2° |
c = 12.4906 (18) Å | µ = 0.27 mm−1 |
α = 77.136 (12)° | T = 113 K |
β = 78.940 (13)° | Prism, colourless |
γ = 72.839 (11)° | 0.18 × 0.06 × 0.06 mm |
V = 795.8 (2) Å3 |
Rigaku Saturn CCD area-detector diffractometer | 3784 independent reflections |
Radiation source: rotating anode | 2531 reflections with I > 2σ(I) |
Multilayer monochromator | Rint = 0.045 |
Detector resolution: 14.63 pixels mm-1 | θmax = 27.9°, θmin = 1.7° |
ω and ϕ scans | h = −8→8 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2009) | k = −13→13 |
Tmin = 0.953, Tmax = 0.984 | l = −16→16 |
10393 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)] = 0.038 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.082 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.95 | w = 1/[σ2(Fo2) + (0.0352P)2] where P = (Fo2 + 2Fc2)/3 |
3784 reflections | (Δ/σ)max = 0.001 |
247 parameters | Δρmax = 0.36 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C16H12F4N2O3S | γ = 72.839 (11)° |
Mr = 388.34 | V = 795.8 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.6032 (10) Å | Mo Kα radiation |
b = 10.4541 (16) Å | µ = 0.27 mm−1 |
c = 12.4906 (18) Å | T = 113 K |
α = 77.136 (12)° | 0.18 × 0.06 × 0.06 mm |
β = 78.940 (13)° |
Rigaku Saturn CCD area-detector diffractometer | 3784 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2009) | 2531 reflections with I > 2σ(I) |
Tmin = 0.953, Tmax = 0.984 | Rint = 0.045 |
10393 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 0 restraints |
wR(F2) = 0.082 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.95 | Δρmax = 0.36 e Å−3 |
3784 reflections | Δρmin = −0.24 e Å−3 |
247 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 | 0.10178 (8) | 0.67205 (5) | 0.43354 (4) | 0.02686 (14) | |
F1 | 0.54415 (17) | 0.42910 (11) | 0.11049 (10) | 0.0313 (3) | |
F2 | 0.38941 (17) | 1.06273 (11) | 0.41921 (8) | 0.0275 (3) | |
F3 | 0.26149 (16) | 1.25835 (10) | 0.32224 (9) | 0.0227 (3) | |
F4 | 0.09036 (16) | 1.10363 (11) | 0.35651 (9) | 0.0267 (3) | |
O1 | 0.15491 (18) | 0.87185 (12) | 0.22648 (10) | 0.0199 (3) | |
O2 | 0.2727 (2) | 1.13183 (13) | 0.14128 (10) | 0.0167 (3) | |
H2 | 0.178 (3) | 1.097 (2) | 0.1497 (18) | 0.036 (7)* | |
O3 | 0.89825 (18) | 1.13035 (12) | 0.07872 (10) | 0.0176 (3) | |
N1 | 0.7582 (2) | 0.95351 (15) | 0.08904 (13) | 0.0146 (3) | |
N2 | 0.5923 (2) | 1.12219 (16) | 0.19491 (12) | 0.0153 (3) | |
C1 | 0.1989 (3) | 0.5998 (2) | 0.55599 (16) | 0.0278 (5) | |
H1A | 0.1369 | 0.5394 | 0.6120 | 0.033* | |
C2 | 0.3737 (3) | 0.63720 (19) | 0.56549 (16) | 0.0254 (5) | |
H2B | 0.4474 | 0.6065 | 0.6286 | 0.031* | |
C3 | 0.4332 (3) | 0.72758 (18) | 0.46990 (15) | 0.0198 (4) | |
H3 | 0.5523 | 0.7640 | 0.4615 | 0.024* | |
C4 | 0.3001 (3) | 0.75680 (18) | 0.39064 (15) | 0.0174 (4) | |
C5 | 0.2979 (3) | 0.84873 (17) | 0.28367 (15) | 0.0152 (4) | |
C6 | 0.4813 (3) | 0.91633 (17) | 0.24203 (14) | 0.0131 (4) | |
H6 | 0.5862 | 0.8833 | 0.2966 | 0.016* | |
C7 | 0.4045 (3) | 1.07322 (17) | 0.22502 (14) | 0.0130 (4) | |
C8 | 0.7569 (3) | 1.07005 (17) | 0.11741 (14) | 0.0140 (4) | |
C9 | 0.5952 (3) | 0.87853 (17) | 0.12902 (14) | 0.0130 (4) | |
H9 | 0.4880 | 0.9089 | 0.0757 | 0.016* | |
C10 | 0.6952 (3) | 0.72647 (17) | 0.13508 (14) | 0.0135 (4) | |
C11 | 0.5744 (3) | 0.64573 (18) | 0.11689 (15) | 0.0161 (4) | |
H11 | 0.4320 | 0.6846 | 0.1005 | 0.019* | |
C12 | 0.6671 (3) | 0.50868 (18) | 0.12332 (15) | 0.0187 (4) | |
C13 | 0.8746 (3) | 0.44660 (18) | 0.14207 (15) | 0.0196 (4) | |
H13 | 0.9345 | 0.3518 | 0.1434 | 0.024* | |
C14 | 0.9932 (3) | 0.52851 (18) | 0.15906 (15) | 0.0203 (4) | |
H14 | 1.1375 | 0.4893 | 0.1722 | 0.024* | |
C15 | 0.9039 (3) | 0.66661 (18) | 0.15703 (14) | 0.0168 (4) | |
H15 | 0.9860 | 0.7207 | 0.1708 | 0.020* | |
C16 | 0.2862 (3) | 1.12363 (18) | 0.33183 (15) | 0.0174 (4) | |
H2A | 0.572 (3) | 1.207 (2) | 0.1936 (16) | 0.021 (5)* | |
H1 | 0.862 (3) | 0.9241 (19) | 0.0400 (16) | 0.023 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0281 (3) | 0.0272 (3) | 0.0271 (3) | −0.0167 (2) | 0.0034 (2) | −0.0019 (2) |
F1 | 0.0319 (7) | 0.0164 (6) | 0.0517 (8) | −0.0106 (5) | −0.0110 (6) | −0.0081 (5) |
F2 | 0.0390 (7) | 0.0251 (6) | 0.0174 (6) | −0.0029 (5) | −0.0083 (5) | −0.0050 (5) |
F3 | 0.0261 (6) | 0.0143 (5) | 0.0276 (6) | −0.0042 (5) | 0.0008 (5) | −0.0086 (5) |
F4 | 0.0218 (6) | 0.0281 (6) | 0.0318 (6) | −0.0120 (5) | 0.0092 (5) | −0.0122 (5) |
O1 | 0.0183 (7) | 0.0207 (7) | 0.0236 (7) | −0.0083 (6) | −0.0065 (6) | −0.0020 (6) |
O2 | 0.0158 (7) | 0.0149 (7) | 0.0209 (7) | −0.0060 (6) | −0.0054 (6) | −0.0011 (5) |
O3 | 0.0141 (6) | 0.0139 (6) | 0.0258 (7) | −0.0070 (5) | 0.0009 (5) | −0.0041 (6) |
N1 | 0.0133 (8) | 0.0118 (8) | 0.0193 (8) | −0.0052 (6) | 0.0008 (7) | −0.0041 (6) |
N2 | 0.0151 (8) | 0.0112 (8) | 0.0208 (8) | −0.0045 (7) | −0.0011 (6) | −0.0052 (7) |
C1 | 0.0352 (12) | 0.0204 (10) | 0.0217 (10) | −0.0081 (9) | 0.0087 (9) | −0.0009 (8) |
C2 | 0.0341 (12) | 0.0215 (10) | 0.0170 (10) | −0.0047 (9) | −0.0016 (9) | −0.0008 (8) |
C3 | 0.0221 (10) | 0.0180 (10) | 0.0191 (10) | −0.0067 (8) | −0.0010 (8) | −0.0023 (8) |
C4 | 0.0178 (9) | 0.0158 (9) | 0.0189 (9) | −0.0069 (8) | 0.0029 (8) | −0.0052 (8) |
C5 | 0.0156 (9) | 0.0122 (9) | 0.0187 (9) | −0.0042 (8) | 0.0017 (8) | −0.0070 (7) |
C6 | 0.0123 (9) | 0.0115 (9) | 0.0161 (9) | −0.0039 (7) | −0.0028 (7) | −0.0020 (7) |
C7 | 0.0143 (9) | 0.0114 (8) | 0.0149 (9) | −0.0049 (7) | −0.0039 (7) | −0.0021 (7) |
C8 | 0.0136 (9) | 0.0115 (9) | 0.0167 (9) | −0.0028 (7) | −0.0062 (7) | 0.0005 (7) |
C9 | 0.0127 (9) | 0.0118 (9) | 0.0159 (9) | −0.0066 (7) | −0.0012 (7) | −0.0017 (7) |
C10 | 0.0172 (9) | 0.0114 (9) | 0.0118 (8) | −0.0048 (8) | −0.0007 (7) | −0.0014 (7) |
C11 | 0.0147 (9) | 0.0137 (9) | 0.0205 (9) | −0.0042 (7) | −0.0034 (8) | −0.0029 (7) |
C12 | 0.0243 (10) | 0.0157 (9) | 0.0211 (10) | −0.0124 (8) | −0.0032 (8) | −0.0036 (8) |
C13 | 0.0233 (10) | 0.0116 (9) | 0.0198 (10) | −0.0019 (8) | 0.0011 (8) | −0.0010 (8) |
C14 | 0.0162 (10) | 0.0177 (10) | 0.0242 (10) | −0.0024 (8) | −0.0034 (8) | 0.0001 (8) |
C15 | 0.0179 (10) | 0.0153 (9) | 0.0182 (9) | −0.0068 (8) | −0.0039 (8) | −0.0002 (8) |
C16 | 0.0177 (10) | 0.0124 (9) | 0.0220 (10) | −0.0041 (8) | −0.0026 (8) | −0.0028 (8) |
S1—C1 | 1.702 (2) | C3—C4 | 1.374 (2) |
S1—C4 | 1.7293 (18) | C3—H3 | 0.9500 |
F1—C12 | 1.3730 (19) | C4—C5 | 1.462 (2) |
F2—C16 | 1.335 (2) | C5—C6 | 1.528 (2) |
F3—C16 | 1.3495 (19) | C6—C9 | 1.543 (2) |
F4—C16 | 1.3372 (19) | C6—C7 | 1.545 (2) |
O1—C5 | 1.228 (2) | C6—H6 | 1.0000 |
O2—C7 | 1.406 (2) | C7—C16 | 1.529 (2) |
O2—H2 | 0.79 (2) | C9—C10 | 1.521 (2) |
O3—C8 | 1.2414 (19) | C9—H9 | 1.0000 |
N1—C8 | 1.340 (2) | C10—C15 | 1.388 (2) |
N1—C9 | 1.462 (2) | C10—C11 | 1.397 (2) |
N1—H1 | 0.858 (19) | C11—C12 | 1.373 (2) |
N2—C8 | 1.377 (2) | C11—H11 | 0.9500 |
N2—C7 | 1.433 (2) | C12—C13 | 1.372 (2) |
N2—H2A | 0.855 (19) | C13—C14 | 1.390 (2) |
C1—C2 | 1.356 (3) | C13—H13 | 0.9500 |
C1—H1A | 0.9500 | C14—C15 | 1.386 (2) |
C2—C3 | 1.417 (2) | C14—H14 | 0.9500 |
C2—H2B | 0.9500 | C15—H15 | 0.9500 |
C1—S1—C4 | 91.22 (10) | C16—C7—C6 | 111.98 (14) |
C7—O2—H2 | 111.1 (16) | O3—C8—N1 | 123.00 (17) |
C8—N1—C9 | 126.08 (16) | O3—C8—N2 | 119.39 (16) |
C8—N1—H1 | 115.4 (13) | N1—C8—N2 | 117.60 (16) |
C9—N1—H1 | 118.4 (13) | N1—C9—C10 | 110.62 (14) |
C8—N2—C7 | 121.26 (15) | N1—C9—C6 | 107.74 (14) |
C8—N2—H2A | 113.8 (13) | C10—C9—C6 | 112.89 (14) |
C7—N2—H2A | 115.5 (12) | N1—C9—H9 | 108.5 |
C2—C1—S1 | 113.23 (15) | C10—C9—H9 | 108.5 |
C2—C1—H1A | 123.4 | C6—C9—H9 | 108.5 |
S1—C1—H1A | 123.4 | C15—C10—C11 | 119.36 (16) |
C1—C2—C3 | 111.78 (18) | C15—C10—C9 | 121.52 (15) |
C1—C2—H2B | 124.1 | C11—C10—C9 | 119.11 (15) |
C3—C2—H2B | 124.1 | C12—C11—C10 | 118.21 (16) |
C4—C3—C2 | 112.76 (17) | C12—C11—H11 | 120.9 |
C4—C3—H3 | 123.6 | C10—C11—H11 | 120.9 |
C2—C3—H3 | 123.6 | C13—C12—C11 | 123.99 (17) |
C3—C4—C5 | 130.49 (16) | C13—C12—F1 | 118.16 (16) |
C3—C4—S1 | 111.01 (14) | C11—C12—F1 | 117.84 (16) |
C5—C4—S1 | 118.45 (14) | C12—C13—C14 | 117.07 (17) |
O1—C5—C4 | 121.99 (16) | C12—C13—H13 | 121.5 |
O1—C5—C6 | 119.49 (16) | C14—C13—H13 | 121.5 |
C4—C5—C6 | 118.52 (15) | C15—C14—C13 | 120.89 (17) |
C5—C6—C9 | 109.89 (14) | C15—C14—H14 | 119.6 |
C5—C6—C7 | 112.76 (14) | C13—C14—H14 | 119.6 |
C9—C6—C7 | 106.99 (13) | C14—C15—C10 | 120.42 (17) |
C5—C6—H6 | 109.0 | C14—C15—H15 | 119.8 |
C9—C6—H6 | 109.0 | C10—C15—H15 | 119.8 |
C7—C6—H6 | 109.0 | F2—C16—F4 | 107.48 (14) |
O2—C7—N2 | 108.42 (14) | F2—C16—F3 | 106.62 (15) |
O2—C7—C16 | 108.32 (14) | F4—C16—F3 | 106.94 (14) |
N2—C7—C16 | 107.11 (14) | F2—C16—C7 | 112.78 (14) |
O2—C7—C6 | 113.95 (14) | F4—C16—C7 | 111.68 (15) |
N2—C7—C6 | 106.77 (14) | F3—C16—C7 | 111.02 (14) |
C4—S1—C1—C2 | 0.06 (16) | C8—N1—C9—C6 | −24.5 (2) |
S1—C1—C2—C3 | −0.2 (2) | C5—C6—C9—N1 | 175.83 (13) |
C1—C2—C3—C4 | 0.4 (2) | C7—C6—C9—N1 | 53.10 (17) |
C2—C3—C4—C5 | 176.81 (18) | C5—C6—C9—C10 | −61.73 (18) |
C2—C3—C4—S1 | −0.3 (2) | C7—C6—C9—C10 | 175.53 (13) |
C1—S1—C4—C3 | 0.16 (15) | N1—C9—C10—C15 | 30.8 (2) |
C1—S1—C4—C5 | −177.37 (15) | C6—C9—C10—C15 | −90.03 (19) |
C3—C4—C5—O1 | −173.57 (18) | N1—C9—C10—C11 | −148.51 (15) |
S1—C4—C5—O1 | 3.4 (2) | C6—C9—C10—C11 | 90.68 (19) |
C3—C4—C5—C6 | 7.1 (3) | C15—C10—C11—C12 | 1.0 (3) |
S1—C4—C5—C6 | −175.94 (13) | C9—C10—C11—C12 | −179.65 (16) |
O1—C5—C6—C9 | −57.9 (2) | C10—C11—C12—C13 | −2.8 (3) |
C4—C5—C6—C9 | 121.40 (17) | C10—C11—C12—F1 | 177.01 (15) |
O1—C5—C6—C7 | 61.3 (2) | C11—C12—C13—C14 | 2.2 (3) |
C4—C5—C6—C7 | −119.34 (17) | F1—C12—C13—C14 | −177.57 (16) |
C8—N2—C7—O2 | −78.04 (19) | C12—C13—C14—C15 | 0.0 (3) |
C8—N2—C7—C16 | 165.27 (15) | C13—C14—C15—C10 | −1.7 (3) |
C8—N2—C7—C6 | 45.1 (2) | C11—C10—C15—C14 | 1.1 (3) |
C5—C6—C7—O2 | −64.89 (19) | C9—C10—C15—C14 | −178.19 (16) |
C9—C6—C7—O2 | 56.04 (18) | O2—C7—C16—F2 | 173.58 (13) |
C5—C6—C7—N2 | 175.45 (14) | N2—C7—C16—F2 | −69.67 (18) |
C9—C6—C7—N2 | −63.62 (17) | C6—C7—C16—F2 | 47.07 (19) |
C5—C6—C7—C16 | 58.50 (19) | O2—C7—C16—F4 | 52.41 (18) |
C9—C6—C7—C16 | 179.43 (14) | N2—C7—C16—F4 | 169.17 (13) |
C9—N1—C8—O3 | −178.49 (15) | C6—C7—C16—F4 | −74.09 (18) |
C9—N1—C8—N2 | 2.9 (2) | O2—C7—C16—F3 | −66.84 (18) |
C7—N2—C8—O3 | 167.11 (15) | N2—C7—C16—F3 | 49.92 (18) |
C7—N2—C8—N1 | −14.3 (2) | C6—C7—C16—F3 | 166.66 (14) |
C8—N1—C9—C10 | −148.29 (16) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O1 | 0.79 (2) | 2.38 (2) | 2.9609 (18) | 131.7 (19) |
N1—H1···O3i | 0.858 (19) | 1.99 (2) | 2.851 (2) | 175.9 (18) |
Symmetry code: (i) −x+2, −y+2, −z. |
Experimental details
Crystal data | |
Chemical formula | C16H12F4N2O3S |
Mr | 388.34 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 113 |
a, b, c (Å) | 6.6032 (10), 10.4541 (16), 12.4906 (18) |
α, β, γ (°) | 77.136 (12), 78.940 (13), 72.839 (11) |
V (Å3) | 795.8 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.27 |
Crystal size (mm) | 0.18 × 0.06 × 0.06 |
Data collection | |
Diffractometer | Rigaku Saturn CCD area-detector diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2009) |
Tmin, Tmax | 0.953, 0.984 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10393, 3784, 2531 |
Rint | 0.045 |
(sin θ/λ)max (Å−1) | 0.658 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.082, 0.95 |
No. of reflections | 3784 |
No. of parameters | 247 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.36, −0.24 |
Computer programs: CrystalClear (Rigaku, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), CrystalStructure (Rigaku, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O1 | 0.79 (2) | 2.38 (2) | 2.9609 (18) | 131.7 (19) |
N1—H1···O3i | 0.858 (19) | 1.99 (2) | 2.851 (2) | 175.9 (18) |
Symmetry code: (i) −x+2, −y+2, −z. |
Acknowledgements
This work was supported by the Foundation of Henan Educational Committee (grant Nos. 2009B150023, 2010B150026).
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 for treating cancer (Cochran et al., 2005) and as TRPA1 modulators for treating pain (Moran et al., 2007). In addition, compounds that contain fluorine have special bioactivity, e.g. flumioxazin is a widely used herbicide (Hermann et al., 2003; 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 C16H12F4N2O3S (I) was isolated and the structure confirmed by X-ray diffraction.
In the structure of the title compound, the dihydropyrimidine ring adopts a half-chair conformation with the C7/C8/C9/N1/N2 are nearly coplanar. The dihedral angle is 53.77 (5) ° between the dihydropyrimidine rings and the phenyl rings, and 80.57 (6) ° between the dihydropyrimidine rings and thiophene rings, respectively. The dihedral angle between the phenyl rings and thiophene rings is 62.26 (7) °. The molecular conformation is stabilized by intramolecular O—H···O hydrogen bond, generating an S(6) ring. In the crystal, adjacent molecules are connected via a centrosymmetric R22(6) motif, formed by N—H···O hydrogen bonds. For a crystal structure related to the title compound, see: Mosslemin et al., 2009.