organic compounds
rac-6-Hydroxy-4-(4-nitrophenyl)-5-(2-thienylcarbonyl)-6-(trifluoromethyl)-3,4,5,6-tetrahydropyrimidin-2(1H)-one monohydrate
aCollege of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan Province, 461000, People's Republic of China
*Correspondence e-mail: xcuwaller@163.com
The title compound, C16H12F3N3O5S·H2O, was prepared by reaction of 4-nitrobenzaldehyde, 4,4,4-trifluoro-1-(thiophen-2-yl)butane-1,3-dione and urea. The contains two independent molecules, with essentially identical geometries and conformations. The dihydropyrimidine rings adopt a half-chair conformation. The dihedral angles between the benzene ring and the thiophene ring are 54.82 (8) and 58.72 (8)° in the two molecules. The molecular conformation of one of the molecules is stabilized by two intramolecular O—H⋯O hydrogen bonds, generating an S(6) ring. The is stabilized by intermolecular O—H⋯O and N—H⋯O hydrogen bonds.
Related literature
For the bioactivity of dihydropyrimidines, see: Brier et al. (2004); Cochran et al. (2005); Moran et al. (2007); Zorkun et al. (2006). For the bioactivity of organofluorine compounds, see: Hermann et al. (2003); Ulrich (2004).
Experimental
Crystal data
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Data collection: CrystalClear-SM Expert (Rigaku, 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, 2009); software used to prepare material for publication: CrystalStructure.
Supporting information
https://doi.org/10.1107/S1600536810041589/fj2348sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810041589/fj2348Isup2.hkl
The title compound was synthesized refluxing for 3 h a stirred solution of 4-nitrobenzaldehyde (0.30 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 inetractions 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).
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; Brier et al., 2004) 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
During the synthesis of DHPM derivatives, the title compound, an intermediate C16H14F3N3O6S (I) was isolated and the structure confirmed by X-ray diffraction, in order to elucidate the reaction mechanism.The title compound crystallizes with two independent molecules in the
In the structure of the title molecule, the dihydropyrimidine ring adopts a half-chair conformation. The of one of the molecules is stabilized by two intramolecular O—H···O hydrogen bond, generating an S(6) ring. The is stabilized by nine intermolecular hydrogen bonds (six O—H···O and three N—H···O) (Table 1). The dihedral angles between the pyridine ring and the thiophene ring are 54.82 (8)° and 58.72 (8)° in the two molecules.For the bioactivity of dihydropyrimidines, see: Brier et al. (2004); Cochran et al. (2005); Moran et al. (2007); Zorkun et al. (2006). For the bioactivity of organofluorine compounds, see: Hermann et al. (2003); Ulrich (2004).
Data collection: CrystalClear-SM Expert (Rigaku, 2009); cell
CrystalClear-SM Expert (Rigaku, 2009); data reduction: CrystalClear-SM Expert (Rigaku, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalStructure (Rigaku, 2009); 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 30% probability level. | |
Fig. 2. The packing diagram of the title compound. Intermolecular hydrogen bonds are shown as dashed line. |
C16H12F3N3O5S·H2O | F(000) = 1776 |
Mr = 433.36 | Dx = 1.620 Mg m−3 |
Orthorhombic, Pna21 | Mo Kα radiation, λ = 0.71075 Å |
Hall symbol: P 2c -2n | Cell parameters from 9674 reflections |
a = 14.1640 (13) Å | θ = 1.6–27.9° |
b = 9.136 (1) Å | µ = 0.26 mm−1 |
c = 27.459 (3) Å | T = 113 K |
V = 3553.3 (6) Å3 | Prism, colorless |
Z = 8 | 0.24 × 0.20 × 0.18 mm |
Rigaku Saturn724 CCD diffractometer | 7861 independent reflections |
Radiation source: rotating anode | 7466 reflections with I > 2σ(I) |
Multilayer monochromator | Rint = 0.031 |
Detector resolution: 14.222 pixels mm-1 | θmax = 27.9°, θmin = 1.5° |
ω scans | h = −18→18 |
Absorption correction: multi-scan (CrystalClear-SM Expert; Rigaku, 2009) | k = −12→11 |
Tmin = 0.941, Tmax = 0.956 | l = −35→36 |
34133 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.037 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.091 | w = 1/[σ2(Fo2) + (0.0567P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max < 0.001 |
7861 reflections | Δρmax = 0.37 e Å−3 |
563 parameters | Δρmin = −0.27 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 3539 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.01 (5) |
C16H12F3N3O5S·H2O | V = 3553.3 (6) Å3 |
Mr = 433.36 | Z = 8 |
Orthorhombic, Pna21 | Mo Kα radiation |
a = 14.1640 (13) Å | µ = 0.26 mm−1 |
b = 9.136 (1) Å | T = 113 K |
c = 27.459 (3) Å | 0.24 × 0.20 × 0.18 mm |
Rigaku Saturn724 CCD diffractometer | 7861 independent reflections |
Absorption correction: multi-scan (CrystalClear-SM Expert; Rigaku, 2009) | 7466 reflections with I > 2σ(I) |
Tmin = 0.941, Tmax = 0.956 | Rint = 0.031 |
34133 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.091 | Δρmax = 0.37 e Å−3 |
S = 1.05 | Δρmin = −0.27 e Å−3 |
7861 reflections | Absolute structure: Flack (1983), 3539 Friedel pairs |
563 parameters | Absolute structure parameter: −0.01 (5) |
1 restraint |
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 | 0.60772 (5) | −0.35697 (6) | 0.08791 (3) | 0.03689 (15) | |
F1 | 0.37968 (10) | −0.23469 (13) | 0.00751 (6) | 0.0331 (3) | |
F2 | 0.27429 (8) | −0.07998 (14) | −0.01598 (5) | 0.0274 (3) | |
F3 | 0.35284 (9) | −0.04033 (14) | 0.04972 (5) | 0.0292 (3) | |
O1 | 0.45567 (10) | −0.08713 (15) | −0.06818 (5) | 0.0212 (3) | |
O2 | 0.43350 (10) | 0.36232 (14) | −0.06593 (5) | 0.0211 (3) | |
O3 | 0.59480 (11) | −0.23377 (16) | −0.01125 (6) | 0.0282 (3) | |
O4 | 0.89623 (12) | 0.33821 (17) | 0.13355 (6) | 0.0335 (4) | |
O5 | 0.96906 (14) | 0.1399 (2) | 0.11251 (7) | 0.0467 (5) | |
N1 | 0.40188 (13) | 0.13684 (17) | −0.03407 (6) | 0.0180 (3) | |
N2 | 0.55597 (13) | 0.2246 (2) | −0.04098 (7) | 0.0203 (4) | |
N3 | 0.90201 (14) | 0.22519 (19) | 0.10965 (7) | 0.0249 (4) | |
C1 | 0.43619 (13) | −0.01001 (19) | −0.02507 (7) | 0.0165 (4) | |
C2 | 0.46358 (14) | 0.2445 (2) | −0.04839 (7) | 0.0183 (4) | |
C3 | 0.60082 (14) | 0.0912 (2) | −0.02294 (7) | 0.0173 (4) | |
H3 | 0.6249 | 0.0323 | −0.0510 | 0.021* | |
C4 | 0.52713 (14) | 0.00176 (19) | 0.00539 (7) | 0.0172 (4) | |
H4A | 0.5117 | 0.0564 | 0.0359 | 0.021* | |
C5 | 0.68228 (15) | 0.1286 (2) | 0.01111 (7) | 0.0182 (4) | |
C6 | 0.67296 (15) | 0.2434 (2) | 0.04432 (8) | 0.0216 (4) | |
H6A | 0.6169 | 0.3005 | 0.0445 | 0.026* | |
C7 | 0.74425 (16) | 0.2748 (2) | 0.07696 (7) | 0.0214 (4) | |
H7 | 0.7383 | 0.3535 | 0.0994 | 0.026* | |
C8 | 0.82467 (15) | 0.1886 (2) | 0.07617 (7) | 0.0205 (4) | |
C9 | 0.83640 (15) | 0.0731 (2) | 0.04422 (8) | 0.0226 (4) | |
H9 | 0.8922 | 0.0154 | 0.0447 | 0.027* | |
C10 | 0.76357 (14) | 0.0438 (2) | 0.01115 (7) | 0.0202 (4) | |
H10 | 0.7698 | −0.0346 | −0.0114 | 0.024* | |
C11 | 0.35973 (15) | −0.0915 (2) | 0.00413 (7) | 0.0203 (4) | |
C12 | 0.56951 (15) | −0.1468 (2) | 0.01993 (8) | 0.0206 (4) | |
C13 | 0.57782 (15) | −0.1808 (2) | 0.07158 (8) | 0.0217 (4) | |
C14 | 0.56852 (15) | −0.0877 (2) | 0.11324 (7) | 0.0241 (4) | |
H14 | 0.5543 | 0.0139 | 0.1124 | 0.029* | |
C15 | 0.58417 (19) | −0.1726 (3) | 0.15664 (9) | 0.0361 (6) | |
H15 | 0.5803 | −0.1326 | 0.1885 | 0.043* | |
C16 | 0.60494 (19) | −0.3148 (3) | 0.14778 (10) | 0.0407 (7) | |
H16 | 0.6168 | −0.3842 | 0.1728 | 0.049* | |
S2 | 0.87505 (5) | 0.87073 (6) | 0.23286 (2) | 0.03609 (15) | |
F4 | 0.62278 (9) | 0.54205 (14) | 0.26486 (4) | 0.0278 (3) | |
F5 | 0.64890 (10) | 0.73570 (13) | 0.30749 (6) | 0.0319 (3) | |
F6 | 0.54339 (9) | 0.57986 (14) | 0.33042 (5) | 0.0261 (3) | |
O6 | 0.72494 (11) | 0.58706 (15) | 0.38319 (5) | 0.0206 (3) | |
O7 | 0.70213 (11) | 0.13746 (14) | 0.38037 (5) | 0.0213 (3) | |
O8 | 0.86907 (11) | 0.72990 (16) | 0.32953 (6) | 0.0253 (3) | |
O9 | 1.16517 (13) | 0.15713 (17) | 0.18214 (6) | 0.0363 (4) | |
O10 | 1.23927 (14) | 0.3536 (2) | 0.20196 (8) | 0.0558 (6) | |
N4 | 0.67149 (13) | 0.36304 (16) | 0.34850 (6) | 0.0174 (3) | |
N5 | 0.82537 (13) | 0.27411 (19) | 0.35508 (7) | 0.0201 (4) | |
N6 | 1.17126 (14) | 0.2717 (2) | 0.20498 (7) | 0.0264 (4) | |
C17 | 0.70562 (14) | 0.5113 (2) | 0.34018 (7) | 0.0181 (4) | |
C18 | 0.73277 (14) | 0.2537 (2) | 0.36261 (7) | 0.0172 (4) | |
C19 | 0.87044 (14) | 0.4083 (2) | 0.33745 (7) | 0.0194 (4) | |
H19 | 0.8951 | 0.4658 | 0.3657 | 0.023* | |
C20 | 0.79665 (14) | 0.49985 (19) | 0.30975 (7) | 0.0173 (4) | |
H20 | 0.7814 | 0.4485 | 0.2786 | 0.021* | |
C21 | 0.62941 (15) | 0.5919 (2) | 0.31056 (8) | 0.0208 (4) | |
C22 | 0.95101 (14) | 0.37086 (19) | 0.30321 (7) | 0.0173 (4) | |
C23 | 0.94011 (15) | 0.2601 (2) | 0.26815 (8) | 0.0222 (4) | |
H23 | 0.8829 | 0.2060 | 0.2669 | 0.027* | |
C24 | 1.01085 (15) | 0.2290 (2) | 0.23565 (7) | 0.0218 (4) | |
H24 | 1.0034 | 0.1537 | 0.2121 | 0.026* | |
C25 | 1.09372 (15) | 0.3103 (2) | 0.23800 (7) | 0.0205 (4) | |
C26 | 1.10671 (16) | 0.4235 (2) | 0.27159 (8) | 0.0236 (4) | |
H26 | 1.1635 | 0.4789 | 0.2720 | 0.028* | |
C27 | 1.03457 (14) | 0.4527 (2) | 0.30426 (8) | 0.0211 (4) | |
H27 | 1.0419 | 0.5287 | 0.3275 | 0.025* | |
C28 | 0.83971 (14) | 0.6501 (2) | 0.29737 (7) | 0.0190 (4) | |
C29 | 0.84472 (15) | 0.6933 (2) | 0.24656 (8) | 0.0210 (4) | |
C30 | 0.82926 (16) | 0.6111 (2) | 0.20372 (8) | 0.0251 (4) | |
H30 | 0.8130 | 0.5102 | 0.2032 | 0.030* | |
C31 | 0.84114 (19) | 0.6988 (3) | 0.16187 (9) | 0.0356 (6) | |
H31 | 0.8340 | 0.6624 | 0.1297 | 0.043* | |
C32 | 0.8636 (2) | 0.8396 (3) | 0.17194 (10) | 0.0391 (6) | |
H32 | 0.8720 | 0.9128 | 0.1478 | 0.047* | |
O11 | 0.98547 (11) | 0.12871 (16) | 0.40001 (6) | 0.0222 (3) | |
O12 | 0.78322 (11) | 0.87168 (16) | 0.41523 (6) | 0.0219 (3) | |
H12A | 0.785 (2) | 0.818 (3) | 0.3900 (11) | 0.043 (8)* | |
H12B | 0.777 (2) | 0.950 (4) | 0.4040 (12) | 0.058 (10)* | |
H1 | 0.3382 (17) | 0.146 (2) | −0.0483 (9) | 0.020 (6)* | |
H2 | 0.5907 (17) | 0.283 (3) | −0.0528 (9) | 0.022 (6)* | |
H5 | 0.859 (2) | 0.209 (3) | 0.3656 (10) | 0.035 (7)* | |
H4 | 0.615 (2) | 0.362 (3) | 0.3582 (9) | 0.028 (7)* | |
H6 | 0.6766 (19) | 0.603 (3) | 0.3989 (10) | 0.029 (7)* | |
H1A | 0.399 (3) | −0.106 (4) | −0.0845 (14) | 0.073 (11)* | |
H11A | 0.9996 (19) | 0.051 (3) | 0.4119 (10) | 0.034 (8)* | |
H11B | 0.982 (2) | 0.188 (3) | 0.4227 (11) | 0.042 (8)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0438 (4) | 0.0252 (3) | 0.0416 (4) | 0.0070 (2) | −0.0030 (3) | 0.0096 (2) |
F1 | 0.0316 (8) | 0.0147 (6) | 0.0531 (9) | −0.0018 (5) | 0.0029 (7) | 0.0088 (6) |
F2 | 0.0176 (6) | 0.0335 (7) | 0.0311 (7) | −0.0052 (5) | −0.0027 (5) | 0.0088 (5) |
F3 | 0.0302 (7) | 0.0358 (7) | 0.0216 (6) | −0.0038 (5) | 0.0023 (6) | 0.0011 (5) |
O1 | 0.0194 (8) | 0.0232 (7) | 0.0210 (7) | 0.0013 (6) | −0.0034 (6) | −0.0063 (6) |
O2 | 0.0199 (8) | 0.0173 (6) | 0.0261 (7) | −0.0003 (5) | −0.0042 (6) | 0.0053 (5) |
O3 | 0.0308 (9) | 0.0224 (7) | 0.0313 (8) | 0.0083 (6) | −0.0068 (7) | −0.0071 (6) |
O4 | 0.0384 (10) | 0.0298 (8) | 0.0322 (9) | −0.0065 (7) | −0.0105 (8) | −0.0042 (7) |
O5 | 0.0321 (11) | 0.0551 (11) | 0.0528 (12) | 0.0129 (8) | −0.0214 (9) | −0.0176 (10) |
N1 | 0.0175 (9) | 0.0135 (8) | 0.0230 (8) | 0.0008 (6) | −0.0030 (7) | 0.0024 (6) |
N2 | 0.0158 (9) | 0.0194 (8) | 0.0256 (9) | −0.0023 (7) | −0.0031 (7) | 0.0076 (7) |
N3 | 0.0253 (10) | 0.0276 (9) | 0.0219 (9) | −0.0060 (7) | −0.0058 (8) | 0.0032 (7) |
C1 | 0.0171 (10) | 0.0132 (8) | 0.0192 (9) | −0.0001 (7) | −0.0034 (8) | −0.0014 (7) |
C2 | 0.0183 (10) | 0.0200 (9) | 0.0167 (9) | −0.0010 (8) | 0.0011 (8) | 0.0017 (7) |
C3 | 0.0160 (10) | 0.0163 (8) | 0.0196 (9) | 0.0014 (7) | −0.0007 (8) | 0.0005 (7) |
C4 | 0.0180 (10) | 0.0138 (8) | 0.0199 (9) | 0.0017 (7) | −0.0020 (8) | −0.0001 (7) |
C5 | 0.0181 (10) | 0.0180 (9) | 0.0185 (9) | −0.0018 (7) | −0.0011 (8) | 0.0031 (7) |
C6 | 0.0189 (11) | 0.0213 (9) | 0.0246 (10) | 0.0016 (8) | −0.0020 (8) | −0.0015 (8) |
C7 | 0.0236 (11) | 0.0203 (9) | 0.0204 (10) | −0.0017 (8) | −0.0001 (8) | −0.0035 (8) |
C8 | 0.0198 (11) | 0.0237 (9) | 0.0180 (9) | −0.0054 (8) | −0.0038 (8) | 0.0039 (7) |
C9 | 0.0201 (11) | 0.0214 (9) | 0.0265 (10) | 0.0001 (8) | −0.0010 (8) | −0.0006 (8) |
C10 | 0.0199 (11) | 0.0184 (9) | 0.0222 (10) | 0.0010 (8) | −0.0027 (8) | −0.0009 (8) |
C11 | 0.0209 (11) | 0.0185 (9) | 0.0216 (10) | 0.0010 (7) | −0.0022 (8) | 0.0017 (7) |
C12 | 0.0154 (10) | 0.0169 (9) | 0.0296 (11) | −0.0006 (7) | −0.0048 (9) | 0.0002 (8) |
C13 | 0.0184 (11) | 0.0163 (9) | 0.0303 (10) | −0.0008 (8) | −0.0060 (9) | 0.0055 (7) |
C14 | 0.0208 (11) | 0.0311 (10) | 0.0205 (10) | 0.0064 (8) | −0.0012 (8) | 0.0112 (8) |
C15 | 0.0361 (15) | 0.0453 (14) | 0.0269 (12) | 0.0058 (11) | −0.0007 (11) | 0.0050 (10) |
C16 | 0.0357 (15) | 0.0459 (16) | 0.0405 (15) | 0.0049 (12) | −0.0027 (12) | 0.0243 (12) |
S2 | 0.0525 (4) | 0.0218 (2) | 0.0340 (3) | −0.0066 (2) | 0.0044 (3) | 0.0062 (2) |
F4 | 0.0294 (7) | 0.0327 (7) | 0.0213 (6) | 0.0030 (5) | −0.0034 (5) | 0.0000 (5) |
F5 | 0.0323 (7) | 0.0156 (5) | 0.0478 (8) | 0.0023 (5) | −0.0039 (7) | 0.0052 (6) |
F6 | 0.0173 (6) | 0.0315 (6) | 0.0296 (6) | 0.0051 (5) | 0.0031 (5) | 0.0058 (5) |
O6 | 0.0196 (8) | 0.0229 (7) | 0.0193 (7) | −0.0004 (6) | 0.0025 (6) | −0.0042 (6) |
O7 | 0.0226 (8) | 0.0160 (7) | 0.0253 (7) | 0.0012 (5) | 0.0047 (6) | 0.0047 (5) |
O8 | 0.0287 (9) | 0.0236 (7) | 0.0236 (7) | −0.0073 (6) | 0.0028 (6) | −0.0041 (6) |
O9 | 0.0433 (11) | 0.0295 (8) | 0.0361 (9) | 0.0045 (7) | 0.0192 (8) | −0.0046 (7) |
O10 | 0.0339 (11) | 0.0690 (14) | 0.0646 (14) | −0.0199 (10) | 0.0273 (10) | −0.0271 (11) |
N4 | 0.0145 (9) | 0.0147 (7) | 0.0231 (9) | 0.0011 (6) | 0.0033 (7) | 0.0030 (6) |
N5 | 0.0184 (9) | 0.0171 (8) | 0.0247 (9) | 0.0038 (7) | 0.0033 (7) | 0.0054 (7) |
N6 | 0.0239 (10) | 0.0317 (9) | 0.0238 (9) | 0.0025 (8) | 0.0045 (8) | 0.0008 (8) |
C17 | 0.0184 (11) | 0.0150 (8) | 0.0210 (10) | −0.0004 (7) | 0.0017 (8) | −0.0002 (7) |
C18 | 0.0185 (10) | 0.0163 (8) | 0.0167 (9) | 0.0006 (8) | 0.0032 (8) | 0.0000 (7) |
C19 | 0.0202 (11) | 0.0184 (9) | 0.0196 (9) | 0.0012 (8) | 0.0037 (8) | 0.0016 (7) |
C20 | 0.0181 (10) | 0.0153 (8) | 0.0185 (9) | 0.0002 (7) | 0.0015 (8) | −0.0015 (7) |
C21 | 0.0232 (11) | 0.0168 (9) | 0.0225 (10) | 0.0002 (7) | 0.0017 (8) | 0.0005 (7) |
C22 | 0.0179 (10) | 0.0165 (9) | 0.0174 (9) | 0.0027 (7) | 0.0032 (8) | 0.0014 (7) |
C23 | 0.0201 (11) | 0.0199 (9) | 0.0266 (11) | −0.0033 (8) | 0.0001 (9) | −0.0031 (8) |
C24 | 0.0222 (11) | 0.0210 (9) | 0.0222 (10) | 0.0015 (8) | −0.0004 (9) | −0.0023 (8) |
C25 | 0.0198 (11) | 0.0215 (9) | 0.0203 (9) | 0.0048 (8) | 0.0043 (8) | 0.0029 (8) |
C26 | 0.0185 (11) | 0.0259 (10) | 0.0264 (11) | −0.0031 (8) | 0.0033 (9) | 0.0021 (8) |
C27 | 0.0220 (11) | 0.0198 (9) | 0.0215 (9) | −0.0002 (8) | −0.0009 (9) | −0.0017 (8) |
C28 | 0.0177 (10) | 0.0167 (9) | 0.0226 (10) | 0.0001 (7) | 0.0031 (8) | 0.0005 (7) |
C29 | 0.0180 (11) | 0.0192 (9) | 0.0258 (10) | −0.0012 (8) | 0.0022 (8) | 0.0009 (8) |
C30 | 0.0264 (12) | 0.0282 (10) | 0.0208 (10) | −0.0069 (8) | 0.0033 (9) | −0.0006 (8) |
C31 | 0.0333 (15) | 0.0496 (15) | 0.0238 (11) | −0.0044 (11) | 0.0023 (10) | 0.0034 (10) |
C32 | 0.0449 (16) | 0.0382 (13) | 0.0342 (13) | −0.0031 (11) | 0.0040 (12) | 0.0150 (11) |
O11 | 0.0262 (9) | 0.0159 (7) | 0.0245 (8) | 0.0022 (6) | 0.0001 (6) | −0.0019 (6) |
O12 | 0.0239 (8) | 0.0178 (7) | 0.0242 (8) | 0.0026 (6) | 0.0004 (6) | −0.0026 (6) |
S1—C16 | 1.689 (3) | F4—C21 | 1.338 (2) |
S1—C13 | 1.724 (2) | F5—C21 | 1.345 (2) |
F1—C11 | 1.341 (2) | F6—C21 | 1.339 (2) |
F2—C11 | 1.334 (2) | O6—C17 | 1.396 (2) |
F3—C11 | 1.340 (2) | O6—H6 | 0.82 (3) |
O1—C1 | 1.405 (2) | O7—C18 | 1.247 (2) |
O1—H1A | 0.93 (4) | O8—C28 | 1.218 (2) |
O2—C2 | 1.254 (2) | O9—N6 | 1.224 (2) |
O3—C12 | 1.222 (3) | O10—N6 | 1.222 (3) |
O4—N3 | 1.226 (2) | N4—C18 | 1.379 (2) |
O5—N3 | 1.231 (3) | N4—C17 | 1.456 (2) |
N1—C2 | 1.373 (2) | N4—H4 | 0.84 (3) |
N1—C1 | 1.448 (2) | N5—C18 | 1.341 (3) |
N1—H1 | 0.99 (2) | N5—C19 | 1.465 (2) |
N2—C2 | 1.337 (3) | N5—H5 | 0.82 (3) |
N2—C3 | 1.462 (2) | N6—C25 | 1.467 (3) |
N2—H2 | 0.80 (3) | C17—C21 | 1.539 (3) |
N3—C8 | 1.469 (3) | C17—C20 | 1.540 (3) |
C1—C4 | 1.540 (3) | C19—C22 | 1.518 (3) |
C1—C11 | 1.540 (3) | C19—C20 | 1.539 (3) |
C3—C5 | 1.524 (3) | C19—H19 | 1.0000 |
C3—C4 | 1.537 (3) | C20—C28 | 1.540 (3) |
C3—H3 | 1.0000 | C20—H20 | 1.0000 |
C4—C12 | 1.537 (3) | C22—C27 | 1.400 (3) |
C4—H4A | 1.0000 | C22—C23 | 1.405 (3) |
C5—C10 | 1.388 (3) | C23—C24 | 1.372 (3) |
C5—C6 | 1.396 (3) | C23—H23 | 0.9500 |
C6—C7 | 1.380 (3) | C24—C25 | 1.391 (3) |
C6—H6A | 0.9500 | C24—H24 | 0.9500 |
C7—C8 | 1.385 (3) | C25—C26 | 1.398 (3) |
C7—H7 | 0.9500 | C26—C27 | 1.386 (3) |
C8—C9 | 1.382 (3) | C26—H26 | 0.9500 |
C9—C10 | 1.400 (3) | C27—H27 | 0.9500 |
C9—H9 | 0.9500 | C28—C29 | 1.452 (3) |
C10—H10 | 0.9500 | C29—C30 | 1.413 (3) |
C12—C13 | 1.457 (3) | C30—C31 | 1.411 (3) |
C13—C14 | 1.432 (3) | C30—H30 | 0.9500 |
C14—C15 | 1.439 (3) | C31—C32 | 1.354 (4) |
C14—H14 | 0.9500 | C31—H31 | 0.9500 |
C15—C16 | 1.355 (4) | C32—H32 | 0.9500 |
C15—H15 | 0.9500 | O11—H11A | 0.81 (3) |
C16—H16 | 0.9500 | O11—H11B | 0.83 (3) |
S2—C32 | 1.705 (3) | O12—H12A | 0.85 (3) |
S2—C29 | 1.719 (2) | O12—H12B | 0.79 (3) |
C16—S1—C13 | 91.98 (12) | C17—O6—H6 | 111.8 (18) |
C1—O1—H1A | 109 (2) | C18—N4—C17 | 120.59 (17) |
C2—N1—C1 | 119.93 (17) | C18—N4—H4 | 120.1 (17) |
C2—N1—H1 | 114.3 (13) | C17—N4—H4 | 111.9 (16) |
C1—N1—H1 | 116.7 (13) | C18—N5—C19 | 126.40 (17) |
C2—N2—C3 | 126.19 (17) | C18—N5—H5 | 115 (2) |
C2—N2—H2 | 116.9 (18) | C19—N5—H5 | 118 (2) |
C3—N2—H2 | 115.4 (18) | O10—N6—O9 | 122.99 (19) |
O4—N3—O5 | 123.40 (19) | O10—N6—C25 | 118.99 (18) |
O4—N3—C8 | 118.49 (19) | O9—N6—C25 | 118.01 (18) |
O5—N3—C8 | 118.10 (18) | O6—C17—N4 | 113.17 (16) |
O1—C1—N1 | 112.75 (16) | O6—C17—C21 | 110.32 (15) |
O1—C1—C4 | 109.18 (15) | N4—C17—C21 | 107.17 (16) |
N1—C1—C4 | 107.98 (14) | O6—C17—C20 | 109.18 (16) |
O1—C1—C11 | 109.54 (15) | N4—C17—C20 | 107.44 (15) |
N1—C1—C11 | 107.52 (16) | C21—C17—C20 | 109.46 (16) |
C4—C1—C11 | 109.84 (16) | O7—C18—N5 | 121.27 (18) |
O2—C2—N2 | 120.51 (18) | O7—C18—N4 | 120.53 (18) |
O2—C2—N1 | 120.57 (18) | N5—C18—N4 | 118.16 (17) |
N2—C2—N1 | 118.82 (18) | N5—C19—C22 | 110.10 (16) |
N2—C3—C5 | 110.45 (16) | N5—C19—C20 | 108.79 (16) |
N2—C3—C4 | 108.65 (16) | C22—C19—C20 | 109.09 (16) |
C5—C3—C4 | 108.86 (16) | N5—C19—H19 | 109.6 |
N2—C3—H3 | 109.6 | C22—C19—H19 | 109.6 |
C5—C3—H3 | 109.6 | C20—C19—H19 | 109.6 |
C4—C3—H3 | 109.6 | C19—C20—C28 | 108.92 (16) |
C3—C4—C12 | 109.60 (16) | C19—C20—C17 | 109.72 (15) |
C3—C4—C1 | 109.30 (15) | C28—C20—C17 | 113.00 (15) |
C12—C4—C1 | 113.97 (15) | C19—C20—H20 | 108.4 |
C3—C4—H4A | 107.9 | C28—C20—H20 | 108.4 |
C12—C4—H4A | 107.9 | C17—C20—H20 | 108.4 |
C1—C4—H4A | 107.9 | F4—C21—F6 | 106.85 (17) |
C10—C5—C6 | 119.84 (19) | F4—C21—F5 | 106.75 (16) |
C10—C5—C3 | 120.19 (17) | F6—C21—F5 | 107.02 (16) |
C6—C5—C3 | 119.87 (18) | F4—C21—C17 | 112.44 (16) |
C7—C6—C5 | 120.74 (19) | F6—C21—C17 | 112.55 (16) |
C7—C6—H6A | 119.6 | F5—C21—C17 | 110.88 (16) |
C5—C6—H6A | 119.6 | C27—C22—C23 | 119.43 (18) |
C6—C7—C8 | 118.24 (18) | C27—C22—C19 | 120.17 (17) |
C6—C7—H7 | 120.9 | C23—C22—C19 | 120.28 (18) |
C8—C7—H7 | 120.9 | C24—C23—C22 | 120.99 (19) |
C9—C8—C7 | 122.89 (19) | C24—C23—H23 | 119.5 |
C9—C8—N3 | 118.78 (19) | C22—C23—H23 | 119.5 |
C7—C8—N3 | 118.29 (18) | C23—C24—C25 | 118.40 (19) |
C8—C9—C10 | 117.99 (19) | C23—C24—H24 | 120.8 |
C8—C9—H9 | 121.0 | C25—C24—H24 | 120.8 |
C10—C9—H9 | 121.0 | C24—C25—C26 | 122.47 (19) |
C5—C10—C9 | 120.30 (18) | C24—C25—N6 | 118.35 (18) |
C5—C10—H10 | 119.9 | C26—C25—N6 | 119.15 (19) |
C9—C10—H10 | 119.9 | C27—C26—C25 | 118.2 (2) |
F2—C11—F3 | 107.04 (16) | C27—C26—H26 | 120.9 |
F2—C11—F1 | 107.27 (16) | C25—C26—H26 | 120.9 |
F3—C11—F1 | 106.93 (16) | C26—C27—C22 | 120.49 (19) |
F2—C11—C1 | 112.58 (16) | C26—C27—H27 | 119.8 |
F3—C11—C1 | 111.65 (16) | C22—C27—H27 | 119.8 |
F1—C11—C1 | 111.06 (16) | O8—C28—C29 | 121.14 (18) |
O3—C12—C13 | 121.33 (19) | O8—C28—C20 | 120.58 (18) |
O3—C12—C4 | 120.45 (19) | C29—C28—C20 | 118.28 (17) |
C13—C12—C4 | 118.22 (18) | C30—C29—C28 | 130.41 (18) |
C14—C13—C12 | 130.08 (18) | C30—C29—S2 | 110.97 (16) |
C14—C13—S1 | 111.70 (15) | C28—C29—S2 | 118.61 (15) |
C12—C13—S1 | 118.18 (16) | C31—C30—C29 | 110.97 (19) |
C13—C14—C15 | 109.10 (19) | C31—C30—H30 | 124.5 |
C13—C14—H14 | 125.4 | C29—C30—H30 | 124.5 |
C15—C14—H14 | 125.4 | C32—C31—C30 | 113.7 (2) |
C16—C15—C14 | 113.7 (2) | C32—C31—H31 | 123.2 |
C16—C15—H15 | 123.2 | C30—C31—H31 | 123.2 |
C14—C15—H15 | 123.2 | C31—C32—S2 | 112.42 (19) |
C15—C16—S1 | 113.50 (19) | C31—C32—H32 | 123.8 |
C15—C16—H16 | 123.3 | S2—C32—H32 | 123.8 |
S1—C16—H16 | 123.3 | H11A—O11—H11B | 107 (3) |
C32—S2—C29 | 91.93 (12) | H12A—O12—H12B | 102 (3) |
C2—N1—C1—O1 | −75.5 (2) | C18—N4—C17—O6 | −75.2 (2) |
C2—N1—C1—C4 | 45.2 (2) | C18—N4—C17—C21 | 162.97 (17) |
C2—N1—C1—C11 | 163.65 (17) | C18—N4—C17—C20 | 45.4 (2) |
C3—N2—C2—O2 | −177.07 (18) | C19—N5—C18—O7 | −175.88 (19) |
C3—N2—C2—N1 | 6.4 (3) | C19—N5—C18—N4 | 6.5 (3) |
C1—N1—C2—O2 | 165.12 (18) | C17—N4—C18—O7 | 163.48 (18) |
C1—N1—C2—N2 | −18.3 (3) | C17—N4—C18—N5 | −18.9 (3) |
C2—N2—C3—C5 | −142.2 (2) | C18—N5—C19—C22 | −142.0 (2) |
C2—N2—C3—C4 | −22.9 (3) | C18—N5—C19—C20 | −22.5 (3) |
N2—C3—C4—C12 | 173.84 (16) | N5—C19—C20—C28 | 172.20 (16) |
C5—C3—C4—C12 | −65.8 (2) | C22—C19—C20—C28 | −67.68 (19) |
N2—C3—C4—C1 | 48.3 (2) | N5—C19—C20—C17 | 48.0 (2) |
C5—C3—C4—C1 | 168.61 (15) | C22—C19—C20—C17 | 168.15 (15) |
O1—C1—C4—C3 | 63.20 (18) | O6—C17—C20—C19 | 63.79 (19) |
N1—C1—C4—C3 | −59.71 (19) | N4—C17—C20—C19 | −59.30 (19) |
C11—C1—C4—C3 | −176.67 (15) | C21—C17—C20—C19 | −175.35 (15) |
O1—C1—C4—C12 | −59.8 (2) | O6—C17—C20—C28 | −58.0 (2) |
N1—C1—C4—C12 | 177.29 (17) | N4—C17—C20—C28 | 178.94 (16) |
C11—C1—C4—C12 | 60.3 (2) | C21—C17—C20—C28 | 62.9 (2) |
N2—C3—C5—C10 | −143.50 (19) | O6—C17—C21—F4 | 166.64 (15) |
C4—C3—C5—C10 | 97.3 (2) | N4—C17—C21—F4 | −69.8 (2) |
N2—C3—C5—C6 | 40.2 (2) | C20—C17—C21—F4 | 46.5 (2) |
C4—C3—C5—C6 | −79.0 (2) | O6—C17—C21—F6 | −72.6 (2) |
C10—C5—C6—C7 | 0.8 (3) | N4—C17—C21—F6 | 51.0 (2) |
C3—C5—C6—C7 | 177.05 (18) | C20—C17—C21—F6 | 167.20 (15) |
C5—C6—C7—C8 | −0.6 (3) | O6—C17—C21—F5 | 47.2 (2) |
C6—C7—C8—C9 | 0.0 (3) | N4—C17—C21—F5 | 170.82 (16) |
C6—C7—C8—N3 | 177.81 (18) | C20—C17—C21—F5 | −73.0 (2) |
O4—N3—C8—C9 | 170.99 (19) | N5—C19—C22—C27 | −141.55 (19) |
O5—N3—C8—C9 | −9.6 (3) | C20—C19—C22—C27 | 99.1 (2) |
O4—N3—C8—C7 | −6.9 (3) | N5—C19—C22—C23 | 42.6 (2) |
O5—N3—C8—C7 | 172.6 (2) | C20—C19—C22—C23 | −76.8 (2) |
C7—C8—C9—C10 | 0.4 (3) | C27—C22—C23—C24 | 1.4 (3) |
N3—C8—C9—C10 | −177.31 (18) | C19—C22—C23—C24 | 177.32 (18) |
C6—C5—C10—C9 | −0.2 (3) | C22—C23—C24—C25 | −0.4 (3) |
C3—C5—C10—C9 | −176.53 (18) | C23—C24—C25—C26 | −1.1 (3) |
C8—C9—C10—C5 | −0.3 (3) | C23—C24—C25—N6 | 176.76 (18) |
O1—C1—C11—F2 | −72.7 (2) | O10—N6—C25—C24 | 170.3 (2) |
N1—C1—C11—F2 | 50.2 (2) | O9—N6—C25—C24 | −10.7 (3) |
C4—C1—C11—F2 | 167.44 (15) | O10—N6—C25—C26 | −11.8 (3) |
O1—C1—C11—F3 | 166.91 (15) | O9—N6—C25—C26 | 167.2 (2) |
N1—C1—C11—F3 | −70.3 (2) | C24—C25—C26—C27 | 1.4 (3) |
C4—C1—C11—F3 | 47.0 (2) | N6—C25—C26—C27 | −176.41 (19) |
O1—C1—C11—F1 | 47.7 (2) | C25—C26—C27—C22 | −0.3 (3) |
N1—C1—C11—F1 | 170.49 (16) | C23—C22—C27—C26 | −1.1 (3) |
C4—C1—C11—F1 | −72.3 (2) | C19—C22—C27—C26 | −176.98 (19) |
C3—C4—C12—O3 | −62.2 (2) | C19—C20—C28—O8 | −58.2 (2) |
C1—C4—C12—O3 | 60.6 (3) | C17—C20—C28—O8 | 64.0 (2) |
C3—C4—C12—C13 | 118.2 (2) | C19—C20—C28—C29 | 121.5 (2) |
C1—C4—C12—C13 | −118.9 (2) | C17—C20—C28—C29 | −116.3 (2) |
O3—C12—C13—C14 | 167.7 (2) | O8—C28—C29—C30 | 168.8 (2) |
C4—C12—C13—C14 | −12.8 (3) | C20—C28—C29—C30 | −10.9 (3) |
O3—C12—C13—S1 | −9.5 (3) | O8—C28—C29—S2 | −10.4 (3) |
C4—C12—C13—S1 | 170.01 (15) | C20—C28—C29—S2 | 169.89 (14) |
C16—S1—C13—C14 | 1.81 (19) | C32—S2—C29—C30 | 1.98 (19) |
C16—S1—C13—C12 | 179.52 (18) | C32—S2—C29—C28 | −178.64 (19) |
C12—C13—C14—C15 | −179.3 (2) | C28—C29—C30—C31 | 179.5 (2) |
S1—C13—C14—C15 | −1.9 (2) | S2—C29—C30—C31 | −1.3 (2) |
C13—C14—C15—C16 | 1.1 (3) | C29—C30—C31—C32 | −0.4 (3) |
C14—C15—C16—S1 | 0.2 (3) | C30—C31—C32—S2 | 1.9 (3) |
C13—S1—C16—C15 | −1.2 (2) | C29—S2—C32—C31 | −2.3 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O12—H12A···O6 | 0.85 (3) | 2.28 (3) | 2.867 (2) | 126 (2) |
O12—H12A···O8 | 0.85 (3) | 2.20 (3) | 2.949 (2) | 147 (3) |
O12—H12B···O7i | 0.79 (3) | 2.11 (3) | 2.852 (2) | 156 (3) |
N1—H1···O12ii | 0.99 (2) | 2.00 (2) | 2.969 (2) | 168.5 (19) |
N2—H2···O12iii | 0.80 (3) | 2.15 (3) | 2.905 (2) | 159 (2) |
N5—H5···O11 | 0.82 (3) | 2.15 (3) | 2.903 (2) | 153 (3) |
N4—H4···O11iv | 0.84 (3) | 2.17 (3) | 2.991 (2) | 166 (2) |
O6—H6···O2v | 0.82 (3) | 1.86 (3) | 2.684 (2) | 179 (3) |
O1—H1A···O7vi | 0.93 (4) | 1.76 (4) | 2.684 (2) | 175 (4) |
O11—H11A···O2vii | 0.81 (3) | 2.06 (3) | 2.849 (2) | 166 (3) |
O11—H11B···O3viii | 0.83 (3) | 2.23 (3) | 2.968 (2) | 148 (3) |
O11—H11B···O1viii | 0.83 (3) | 2.25 (3) | 2.863 (2) | 131 (3) |
Symmetry codes: (i) x, y+1, z; (ii) −x+1, −y+1, z−1/2; (iii) −x+3/2, y−1/2, z−1/2; (iv) x−1/2, −y+1/2, z; (v) −x+1, −y+1, z+1/2; (vi) −x+1, −y, z−1/2; (vii) −x+3/2, y−1/2, z+1/2; (viii) −x+3/2, y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C16H12F3N3O5S·H2O |
Mr | 433.36 |
Crystal system, space group | Orthorhombic, Pna21 |
Temperature (K) | 113 |
a, b, c (Å) | 14.1640 (13), 9.136 (1), 27.459 (3) |
V (Å3) | 3553.3 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.26 |
Crystal size (mm) | 0.24 × 0.20 × 0.18 |
Data collection | |
Diffractometer | Rigaku Saturn724 CCD |
Absorption correction | Multi-scan (CrystalClear-SM Expert; Rigaku, 2009) |
Tmin, Tmax | 0.941, 0.956 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 34133, 7861, 7466 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.658 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.037, 0.091, 1.05 |
No. of reflections | 7861 |
No. of parameters | 563 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.37, −0.27 |
Absolute structure | Flack (1983), 3539 Friedel pairs |
Absolute structure parameter | −0.01 (5) |
Computer programs: CrystalClear-SM Expert (Rigaku, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), CrystalStructure (Rigaku, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O12—H12A···O6 | 0.85 (3) | 2.28 (3) | 2.867 (2) | 126 (2) |
O12—H12A···O8 | 0.85 (3) | 2.20 (3) | 2.949 (2) | 147 (3) |
O12—H12B···O7i | 0.79 (3) | 2.11 (3) | 2.852 (2) | 156 (3) |
N1—H1···O12ii | 0.99 (2) | 2.00 (2) | 2.969 (2) | 168.5 (19) |
N2—H2···O12iii | 0.80 (3) | 2.15 (3) | 2.905 (2) | 159 (2) |
N5—H5···O11 | 0.82 (3) | 2.15 (3) | 2.903 (2) | 153 (3) |
N4—H4···O11iv | 0.84 (3) | 2.17 (3) | 2.991 (2) | 166 (2) |
O6—H6···O2v | 0.82 (3) | 1.86 (3) | 2.684 (2) | 179 (3) |
O1—H1A···O7vi | 0.93 (4) | 1.76 (4) | 2.684 (2) | 175 (4) |
O11—H11A···O2vii | 0.81 (3) | 2.06 (3) | 2.849 (2) | 166 (3) |
O11—H11B···O3viii | 0.83 (3) | 2.23 (3) | 2.968 (2) | 148 (3) |
O11—H11B···O1viii | 0.83 (3) | 2.25 (3) | 2.863 (2) | 131 (3) |
Symmetry codes: (i) x, y+1, z; (ii) −x+1, −y+1, z−1/2; (iii) −x+3/2, y−1/2, z−1/2; (iv) x−1/2, −y+1/2, z; (v) −x+1, −y+1, z+1/2; (vi) −x+1, −y, z−1/2; (vii) −x+3/2, y−1/2, z+1/2; (viii) −x+3/2, y+1/2, z+1/2. |
Acknowledgements
This work was supported by the Natural Science Foundation of Henan Province, China (grant No. 082300420110) and the Natural Science Foundation of Henan Province Education Department, China (grant No. 2007150036).
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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; Brier et al., 2004) 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 C16H14F3N3O6S (I) was isolated and the structure confirmed by X-ray diffraction, in order to elucidate the reaction mechanism.
The title compound crystallizes with two independent molecules in the asymmetric unit. In the structure of the title molecule, the dihydropyrimidine ring adopts a half-chair conformation. The molecular conformation of one of the molecules is stabilized by two intramolecular O—H···O hydrogen bond, generating an S(6) ring. The crystal structure is stabilized by nine intermolecular hydrogen bonds (six O—H···O and three N—H···O) (Table 1). The dihedral angles between the pyridine ring and the thiophene ring are 54.82 (8)° and 58.72 (8)° in the two molecules.