organic compounds
of ethyl 6-(chloromethyl)-4-(4-chlorophenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate
aDepartment of Physics, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India, bDepartment of Physics & Nano Technology, SRM University, SRM Nagar, Kattankulathur, Kancheepuram District, Chennai 603 203, Tamil Nadu, India, cPG and Research Department of Chemistry, Jamal Mohamed College (Autonomous), Tiruchirappalli, Tamil Nadu 620 020, India, and dPG and Research Dept of Chemistry, Jamal Mohamed College (Autonomous), Tiruchirappalli, Tamil Nadu 620 020, India
*Correspondence e-mail: phdguna@gmail.com
In the title compound, C14H14Cl2N2O3, the chlorophenyl ring makes a dihedral angle of 87.08 (9)° with the tetrahydropyrimidine ring. There is a short intramolecular C—H⋯O contact present. In the crystal, molecules are linked via pairs of N—H⋯O hydrogen bonds, forming inversion dimers with an R22(8) ring motif. The dimers are linked via a second pair of N—H⋯O hydrogen bonds, this time enclosing an R44(20) ring motif, forming ribbons along [100]. The ribbons are linked via C—H⋯O hydrogen bonds, forming sheets lying parallel to (001). The terminal ethyl group is disordered over two positions with an occupancy ratio of 0.654 (17):0.346 (17).
Keywords: crystal structure; tetrahydropyrimidine; inversion dimers; anticarcinogenic; antihypertensive; calcium channel modulators..
CCDC reference: 1030125
1. Related literature
For the many biological activities of dihydropyrimidinone derivatives, see: Atwal et al. (1991); Jauk et al. (2000); Kato (1984); Wipf & Cunningham (1995); Bedia et al. (2006); For related structures, see: Nayak et al. (2009); Yuvaraj et al. (2010);
2. Experimental
2.1. Crystal data
|
2.3. Refinement
|
Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 and PLATON.
Supporting information
CCDC reference: 1030125
10.1107/S1600536814023046/su5005sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814023046/su5005Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814023046/su5005Isup3.cml
A mixture of ethyl-4-chloro acetoacetate (4.1 ml, 0.025 mol), 4-chlorobenzaldehyde (3.6 g, 0.025 mol), and urea (4.5 g, 0.075 mol) in ethanol (5 ml) was heated under reflux in the presence of concentrated HCl (1 mL) for 5 h (monitored by TLC). The reaction mixture, after being cooled to room temperature, was poured onto crushed ice and stirred for 5–10 min. The solid was separated and filtered under suction, washed with ice-cold water (50 ml), and then recrystallized from hot ethanol to afford pure product [m.p. 437 K; yield 76%].
The terminal ethyl group is disordered over two position. The refined site occupancies of the disordered C atoms are C13/C14 = 0.654 (17) and C13A/C14A = 0.346 (17). The O3—C13A and C13A—C14A bond distances was restrained to be 1.400 (1) Å. In the
ISOR was used for atoms C13, C14, C13A and C14A. The H atoms were positioned geometrically and refined using a riding model: N—H = 0.86 Å, C—H = 0.93 - 0.98 Å with Uiso(H) = 1.5Ueq(C) for methyl H atoms and = 1.2Ueq(N,C) for other H atoms.Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).The molecular structure of the title molecule, with atom labelling. Displacement ellipsoids are drawn at the 30% probability level. The crystal packing of the title compound, viewed along the a axis. Hydrogen bonds are shown as dashed lines (see Table 1 for details). |
C14H14Cl2N2O3 | Z = 2 |
Mr = 329.17 | F(000) = 340 |
Triclinic, P1 | Dx = 1.431 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.4698 (3) Å | Cell parameters from 4865 reflections |
b = 9.1436 (3) Å | θ = 2.5–30.1° |
c = 12.6085 (4) Å | µ = 0.44 mm−1 |
α = 107.147 (2)° | T = 295 K |
β = 99.941 (2)° | Block, colourless |
γ = 105.331 (2)° | 0.30 × 0.25 × 0.20 mm |
V = 763.71 (5) Å3 |
Bruker APEXII CCD diffractometer | 3945 independent reflections |
Radiation source: fine-focus sealed tube | 2911 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.022 |
Detector resolution: 0 pixels mm-1 | θmax = 31.0°, θmin = 2.5° |
ω and ϕ scans | h = −10→10 |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | k = −12→12 |
Tmin = 0.897, Tmax = 0.917 | l = −18→17 |
20157 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)] = 0.054 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.153 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0628P)2 + 0.6453P] where P = (Fo2 + 2Fc2)/3 |
3945 reflections | (Δ/σ)max < 0.001 |
211 parameters | Δρmax = 0.64 e Å−3 |
26 restraints | Δρmin = −0.53 e Å−3 |
C14H14Cl2N2O3 | γ = 105.331 (2)° |
Mr = 329.17 | V = 763.71 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.4698 (3) Å | Mo Kα radiation |
b = 9.1436 (3) Å | µ = 0.44 mm−1 |
c = 12.6085 (4) Å | T = 295 K |
α = 107.147 (2)° | 0.30 × 0.25 × 0.20 mm |
β = 99.941 (2)° |
Bruker APEXII CCD diffractometer | 3945 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2911 reflections with I > 2σ(I) |
Tmin = 0.897, Tmax = 0.917 | Rint = 0.022 |
20157 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 26 restraints |
wR(F2) = 0.153 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.64 e Å−3 |
3945 reflections | Δρmin = −0.53 e Å−3 |
211 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
C1 | 0.8422 (5) | 0.1384 (4) | 0.5387 (2) | 0.0651 (8) | |
C2 | 0.7145 (5) | −0.0099 (4) | 0.4712 (3) | 0.0725 (9) | |
H2 | 0.6712 | −0.0878 | 0.5031 | 0.087* | |
C3 | 0.6488 (4) | −0.0442 (3) | 0.3538 (2) | 0.0598 (7) | |
H3 | 0.5588 | −0.1453 | 0.3073 | 0.072* | |
C4 | 0.7137 (3) | 0.0674 (3) | 0.30506 (18) | 0.0361 (4) | |
C5 | 0.8424 (5) | 0.2165 (4) | 0.3761 (3) | 0.0699 (9) | |
H5 | 0.8876 | 0.2950 | 0.3452 | 0.084* | |
C6 | 0.9060 (6) | 0.2518 (4) | 0.4938 (3) | 0.0895 (12) | |
H6 | 0.9925 | 0.3537 | 0.5414 | 0.107* | |
C7 | 0.6508 (3) | 0.0279 (2) | 0.17587 (17) | 0.0306 (4) | |
H7 | 0.7032 | 0.1280 | 0.1613 | 0.037* | |
C8 | 0.6382 (3) | −0.2509 (2) | 0.06968 (18) | 0.0342 (4) | |
C9 | 0.3408 (3) | −0.1913 (2) | 0.06544 (17) | 0.0315 (4) | |
C10 | 0.4341 (3) | −0.0329 (2) | 0.12644 (16) | 0.0300 (4) | |
C11 | 0.1275 (3) | −0.2650 (3) | 0.0111 (2) | 0.0454 (5) | |
H11A | 0.0752 | −0.1799 | 0.0068 | 0.055* | |
H11B | 0.0673 | −0.3162 | 0.0593 | 0.055* | |
C12 | 0.3328 (3) | 0.0848 (3) | 0.15276 (18) | 0.0360 (4) | |
N1 | 0.7306 (2) | −0.0910 (2) | 0.11509 (15) | 0.0338 (4) | |
H1 | 0.8450 | −0.0555 | 0.1081 | 0.041* | |
N2 | 0.4415 (2) | −0.2989 (2) | 0.05067 (17) | 0.0375 (4) | |
H2A | 0.3781 | −0.4009 | 0.0285 | 0.045* | |
O1 | 0.7187 (2) | −0.35121 (19) | 0.04214 (16) | 0.0488 (4) | |
O2 | 0.1610 (2) | 0.0561 (2) | 0.13615 (16) | 0.0508 (4) | |
O3 | 0.4586 (2) | 0.23490 (19) | 0.20251 (17) | 0.0554 (5) | |
C13 | 0.374 (3) | 0.3618 (16) | 0.2478 (12) | 0.086 (4) | 0.654 (17) |
H13A | 0.2924 | 0.3745 | 0.1847 | 0.103* | 0.654 (17) |
H13B | 0.2959 | 0.3318 | 0.2971 | 0.103* | 0.654 (17) |
C14 | 0.5303 (12) | 0.5098 (7) | 0.3121 (11) | 0.116 (4) | 0.654 (17) |
H14A | 0.6081 | 0.4964 | 0.3752 | 0.174* | 0.654 (17) |
H14B | 0.4803 | 0.5955 | 0.3415 | 0.174* | 0.654 (17) |
H14C | 0.6076 | 0.5371 | 0.2627 | 0.174* | 0.654 (17) |
C13A | 0.394 (4) | 0.368 (3) | 0.2319 (11) | 0.070 (7) | 0.346 (17) |
H13C | 0.2598 | 0.3357 | 0.1900 | 0.084* | 0.346 (17) |
H13D | 0.4684 | 0.4531 | 0.2098 | 0.084* | 0.346 (17) |
C14A | 0.414 (4) | 0.428 (3) | 0.3506 (12) | 0.127 (10) | 0.346 (17) |
H14D | 0.3199 | 0.3533 | 0.3697 | 0.190* | 0.346 (17) |
H14E | 0.3937 | 0.5314 | 0.3713 | 0.190* | 0.346 (17) |
H14F | 0.5409 | 0.4415 | 0.3920 | 0.190* | 0.346 (17) |
Cl1 | 0.92366 (19) | 0.18204 (17) | 0.68608 (7) | 0.1114 (4) | |
Cl2 | 0.07043 (8) | −0.41074 (8) | −0.12863 (5) | 0.0522 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0719 (18) | 0.085 (2) | 0.0334 (12) | 0.0407 (17) | 0.0004 (12) | 0.0089 (13) |
C2 | 0.095 (2) | 0.079 (2) | 0.0475 (16) | 0.0299 (19) | 0.0186 (15) | 0.0296 (15) |
C3 | 0.0751 (18) | 0.0529 (15) | 0.0402 (13) | 0.0083 (13) | 0.0088 (12) | 0.0163 (11) |
C4 | 0.0315 (10) | 0.0396 (11) | 0.0348 (10) | 0.0151 (8) | 0.0040 (8) | 0.0098 (8) |
C5 | 0.076 (2) | 0.0498 (15) | 0.0523 (16) | −0.0029 (14) | −0.0110 (14) | 0.0120 (12) |
C6 | 0.099 (3) | 0.069 (2) | 0.0506 (18) | 0.0008 (19) | −0.0216 (17) | −0.0003 (16) |
C7 | 0.0246 (9) | 0.0292 (9) | 0.0363 (10) | 0.0085 (7) | 0.0058 (7) | 0.0110 (8) |
C8 | 0.0261 (9) | 0.0363 (10) | 0.0398 (10) | 0.0112 (8) | 0.0095 (8) | 0.0122 (8) |
C9 | 0.0228 (8) | 0.0364 (10) | 0.0361 (10) | 0.0107 (7) | 0.0095 (7) | 0.0124 (8) |
C10 | 0.0255 (9) | 0.0331 (9) | 0.0325 (9) | 0.0112 (7) | 0.0066 (7) | 0.0126 (8) |
C11 | 0.0262 (10) | 0.0453 (12) | 0.0516 (13) | 0.0079 (9) | 0.0099 (9) | 0.0027 (10) |
C12 | 0.0343 (10) | 0.0374 (10) | 0.0370 (10) | 0.0163 (8) | 0.0061 (8) | 0.0123 (8) |
N1 | 0.0207 (7) | 0.0351 (9) | 0.0416 (9) | 0.0079 (6) | 0.0086 (6) | 0.0094 (7) |
N2 | 0.0237 (8) | 0.0284 (8) | 0.0552 (11) | 0.0069 (6) | 0.0101 (7) | 0.0096 (7) |
O1 | 0.0303 (8) | 0.0385 (8) | 0.0734 (12) | 0.0151 (6) | 0.0150 (7) | 0.0103 (8) |
O2 | 0.0333 (8) | 0.0521 (10) | 0.0681 (11) | 0.0229 (7) | 0.0135 (7) | 0.0155 (8) |
O3 | 0.0431 (9) | 0.0336 (8) | 0.0738 (12) | 0.0180 (7) | −0.0026 (8) | 0.0034 (8) |
C13 | 0.071 (6) | 0.051 (6) | 0.116 (9) | 0.039 (4) | 0.008 (6) | −0.001 (5) |
C14 | 0.100 (5) | 0.041 (3) | 0.171 (9) | 0.017 (3) | 0.030 (5) | −0.003 (4) |
C13A | 0.077 (14) | 0.052 (10) | 0.063 (8) | 0.048 (10) | −0.016 (7) | −0.009 (7) |
C14A | 0.18 (2) | 0.138 (18) | 0.075 (9) | 0.115 (18) | 0.028 (9) | 0.000 (9) |
Cl1 | 0.1383 (10) | 0.1531 (11) | 0.0355 (4) | 0.0742 (8) | 0.0001 (5) | 0.0144 (5) |
Cl2 | 0.0426 (3) | 0.0510 (4) | 0.0510 (3) | 0.0153 (3) | −0.0023 (2) | 0.0100 (3) |
C1—C6 | 1.342 (5) | C11—Cl2 | 1.766 (2) |
C1—C2 | 1.352 (5) | C11—H11A | 0.9700 |
C1—Cl1 | 1.739 (3) | C11—H11B | 0.9700 |
C2—C3 | 1.388 (4) | C12—O2 | 1.207 (3) |
C2—H2 | 0.9300 | C12—O3 | 1.330 (3) |
C3—C4 | 1.366 (3) | N1—H1 | 0.8600 |
C3—H3 | 0.9300 | N2—H2A | 0.8600 |
C4—C5 | 1.369 (3) | O3—C13A | 1.4000 (10) |
C4—C7 | 1.518 (3) | O3—C13 | 1.482 (8) |
C5—C6 | 1.387 (4) | C13—C14 | 1.430 (19) |
C5—H5 | 0.9300 | C13—H13A | 0.9700 |
C6—H6 | 0.9300 | C13—H13B | 0.9700 |
C7—N1 | 1.461 (2) | C14—H14A | 0.9600 |
C7—C10 | 1.513 (2) | C14—H14B | 0.9600 |
C7—H7 | 0.9800 | C14—H14C | 0.9600 |
C8—O1 | 1.225 (2) | C13A—C14A | 1.4000 (10) |
C8—N1 | 1.333 (3) | C13A—H13C | 0.9700 |
C8—N2 | 1.373 (2) | C13A—H13D | 0.9700 |
C9—C10 | 1.341 (3) | C14A—H14D | 0.9600 |
C9—N2 | 1.379 (2) | C14A—H14E | 0.9600 |
C9—C11 | 1.498 (3) | C14A—H14F | 0.9600 |
C10—C12 | 1.466 (3) | ||
C6—C1—C2 | 121.0 (3) | Cl2—C11—H11A | 109.2 |
C6—C1—Cl1 | 119.8 (3) | C9—C11—H11B | 109.2 |
C2—C1—Cl1 | 119.2 (3) | Cl2—C11—H11B | 109.2 |
C1—C2—C3 | 119.1 (3) | H11A—C11—H11B | 107.9 |
C1—C2—H2 | 120.5 | O2—C12—O3 | 122.43 (19) |
C3—C2—H2 | 120.5 | O2—C12—C10 | 127.3 (2) |
C4—C3—C2 | 121.3 (3) | O3—C12—C10 | 110.28 (17) |
C4—C3—H3 | 119.4 | C8—N1—C7 | 124.46 (16) |
C2—C3—H3 | 119.4 | C8—N1—H1 | 117.8 |
C3—C4—C5 | 118.0 (2) | C7—N1—H1 | 117.8 |
C3—C4—C7 | 121.6 (2) | C8—N2—C9 | 123.10 (17) |
C5—C4—C7 | 120.4 (2) | C8—N2—H2A | 118.5 |
C4—C5—C6 | 120.8 (3) | C9—N2—H2A | 118.4 |
C4—C5—H5 | 119.6 | C12—O3—C13A | 120.4 (14) |
C6—C5—H5 | 119.6 | C12—O3—C13 | 114.8 (8) |
C1—C6—C5 | 119.8 (3) | C13A—O3—C13 | 10.8 (18) |
C1—C6—H6 | 120.1 | C14—C13—O3 | 107.3 (12) |
C5—C6—H6 | 120.1 | C14—C13—H13A | 110.3 |
N1—C7—C10 | 109.45 (15) | O3—C13—H13A | 110.3 |
N1—C7—C4 | 110.73 (15) | C14—C13—H13B | 110.3 |
C10—C7—C4 | 113.47 (16) | O3—C13—H13B | 110.3 |
N1—C7—H7 | 107.7 | H13A—C13—H13B | 108.5 |
C10—C7—H7 | 107.7 | O3—C13A—C14A | 110.7 (9) |
C4—C7—H7 | 107.7 | O3—C13A—H13C | 109.5 |
O1—C8—N1 | 123.56 (18) | C14A—C13A—H13C | 109.5 |
O1—C8—N2 | 120.66 (19) | O3—C13A—H13D | 109.5 |
N1—C8—N2 | 115.73 (17) | C14A—C13A—H13D | 109.5 |
C10—C9—N2 | 120.01 (17) | H13C—C13A—H13D | 108.1 |
C10—C9—C11 | 124.57 (18) | C13A—C14A—H14D | 109.5 |
N2—C9—C11 | 115.41 (18) | C13A—C14A—H14E | 109.5 |
C9—C10—C12 | 122.35 (17) | H14D—C14A—H14E | 109.5 |
C9—C10—C7 | 119.80 (17) | C13A—C14A—H14F | 109.5 |
C12—C10—C7 | 117.78 (17) | H14D—C14A—H14F | 109.5 |
C9—C11—Cl2 | 112.02 (15) | H14E—C14A—H14F | 109.5 |
C9—C11—H11A | 109.2 | ||
C6—C1—C2—C3 | −0.1 (5) | C10—C9—C11—Cl2 | 138.10 (19) |
Cl1—C1—C2—C3 | 179.6 (3) | N2—C9—C11—Cl2 | −42.8 (3) |
C1—C2—C3—C4 | 1.4 (5) | C9—C10—C12—O2 | 8.7 (4) |
C2—C3—C4—C5 | −1.7 (5) | C7—C10—C12—O2 | −168.2 (2) |
C2—C3—C4—C7 | 176.7 (3) | C9—C10—C12—O3 | −173.0 (2) |
C3—C4—C5—C6 | 0.7 (5) | C7—C10—C12—O3 | 10.1 (3) |
C7—C4—C5—C6 | −177.7 (3) | O1—C8—N1—C7 | −163.2 (2) |
C2—C1—C6—C5 | −0.8 (6) | N2—C8—N1—C7 | 19.2 (3) |
Cl1—C1—C6—C5 | 179.4 (3) | C10—C7—N1—C8 | −31.1 (3) |
C4—C5—C6—C1 | 0.5 (6) | C4—C7—N1—C8 | 94.8 (2) |
C3—C4—C7—N1 | −68.6 (3) | O1—C8—N2—C9 | −171.1 (2) |
C5—C4—C7—N1 | 109.8 (3) | N1—C8—N2—C9 | 6.6 (3) |
C3—C4—C7—C10 | 55.0 (3) | C10—C9—N2—C8 | −16.8 (3) |
C5—C4—C7—C10 | −126.6 (3) | C11—C9—N2—C8 | 164.1 (2) |
N2—C9—C10—C12 | −174.98 (18) | O2—C12—O3—C13A | −3.8 (9) |
C11—C9—C10—C12 | 4.0 (3) | C10—C12—O3—C13A | 177.8 (9) |
N2—C9—C10—C7 | 1.8 (3) | O2—C12—O3—C13 | 6.6 (7) |
C11—C9—C10—C7 | −179.16 (19) | C10—C12—O3—C13 | −171.8 (7) |
N1—C7—C10—C9 | 19.3 (3) | C12—O3—C13—C14 | 171.9 (10) |
C4—C7—C10—C9 | −105.0 (2) | C13A—O3—C13—C14 | −65 (9) |
N1—C7—C10—C12 | −163.80 (17) | C12—O3—C13A—C14A | 103 (2) |
C4—C7—C10—C12 | 72.0 (2) | C13—O3—C13A—C14A | 42 (7) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.86 | 2.04 | 2.885 (2) | 166 |
N1—H1···O2ii | 0.86 | 2.23 | 3.070 (2) | 166 |
C11—H11B···O1iii | 0.97 | 2.50 | 3.069 (3) | 117 |
C11—H11A···O2 | 0.97 | 2.14 | 2.814 (3) | 126 |
Symmetry codes: (i) −x+1, −y−1, −z; (ii) x+1, y, z; (iii) x−1, y, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.86 | 2.04 | 2.885 (2) | 166 |
N1—H1···O2ii | 0.86 | 2.23 | 3.070 (2) | 166 |
C11—H11B···O1iii | 0.97 | 2.50 | 3.069 (3) | 117 |
C11—H11A···O2 | 0.97 | 2.14 | 2.814 (3) | 126 |
Symmetry codes: (i) −x+1, −y−1, −z; (ii) x+1, y, z; (iii) x−1, y, z. |
Acknowledgements
SB thanks Professor K. Ramamurthi, Department of Physics and Nanotechnology, SRM University, Chennai, for his guidance and valuable suggestions.
References
Atwal, K. S., Swanson, B. N., Unger, S. E., Floyd, D. M., Moreland, S., Hedberg, A. & O'Reilly, B. C. (1991). J. Med. Chem. 34, 806–811. CrossRef PubMed CAS Web of Science Google Scholar
Bedia, K. K., Elçin, O., Seda, U., Fatma, K., Nathaly, S., Sevim, R. & Dimoglo, A. (2006). Eur. J. Med. Chem. 41, 1253–1261. Web of Science CrossRef PubMed CAS Google Scholar
Bruker (2008). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Jauk, B., Pernat, T. & Kappe, C. O. (2000). Molecules, 5, 227–239. Web of Science CrossRef CAS Google Scholar
Kato, T. (1984). Chem. Abstr. 102, 132067. Google Scholar
Nayak, S. K., Venugopala, K. N., Chopra, D., Govender, T., Kruger, H. G., Maguire, G. E. M. & Guru Row, T. N. (2009). Acta Cryst. E65, o2502. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (1996). SADABS, University of G\"ottingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wipf, P. & Cunningham, A. (1995). Tetrahedron Lett. 36, 7819–7822. CrossRef CAS Web of Science Google Scholar
Yuvaraj, H., Sundaramoorthy, S., Velmurugan, D. & Kalkhambkar, R. G. (2010). Acta Cryst. E66, o3325. Web of Science CSD CrossRef IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Dihydropyrimidinones (DHPM) and their derivatives are important on account of their wide range of applications in therapeutic and pharmacology, namely because of their anticarcinogenic (Kato, 1984), antihypertensive (Atwal et al., 1991) and calcium channel modulators (Jauk et al., 2000) activities. These derivatives have also been screened for anti-bacterial (Wipf & Cunningham, 1995), and anti-tuberculosis activity (Bedia et al., 2006).
The geometric parameters of the title molecule (Fig. 1) agree well with those reported fro similar structures (Nayak et al., 2009; Yuvaraj et al., 2010). The chlorophenyl ring makes a dihedral angles of 87.08 (9) ° with the tetrahydropyrimidine ring. There is a short intramolecular C—H···O contact (Table 1).
In the crystal, molecules are linked via a pair of N—H···O hydrogen bonds forming inversion dimers with an R22(8) ring motif. The dimers are linked via a second pair of N—H···O hydrogen bonds, this time enclosing an R44(20) ring motif, forming ribbons along [100]. The ribbons are linked via C—H···O hydrogen bonds forming sheets lying parallel to (001); see Table 1 and Fig. 2 for details.