organic compounds
3-Methyl-2-(3,3,3-trichloro-2-hydroxypropyl)quinazolin-4(3H)-one
aS.Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str. 77, Tashkent 100170, Uzbekistan
*Correspondence e-mail: raxul@mail.ru
The title molecule, C12H11Cl3N2O2, contains planar quinazolin-4(3H)-one (r.m.s. deviation = 0.0257 Å) and propyl fragments, forming a dihedral angle of 10.4 (2)°. An intramolecular O—H⋯N hydorgen bond occurs. In the crystal, O—H⋯O hydrogen bonds link the molecules into an infinite chain running parallel to the b axis.
Related literature
For the biological properties of quinazolin-4(3H)-one derivatives, see: Yang et al. (2009). For the fungicidal and insecticidal activity and syntheses of quinazolin-4(3H)-one derivatives, see: Shakhidoyatov (1988). For related structures of quinazolin-4(3H)-one derivatives, see: Tashkhodjaev et al. (2001). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Oxford Diffraction, 2009); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536813016073/pv2636sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813016073/pv2636Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813016073/pv2636Isup3.cml
In the pear-shaped flask were placed 2,3-dimethylquinazolin-4(3H)-one (0.348 g, 2 mmol) and chloral hydrate (2,2,2-trichloroethane-1,1-diol) (0.397 g, 2.4 mmol) and heated in an oil bath at 403 K for 6 h (Figure 3). The resulting solid was recrystallized from cyclohexane, yield 0.378 g (59%). The purity of synthesized compound was checked by thin layer
(TLC) on plate Whatman AL Sil G/UV (Germany), viewing box 254 nm. Eluents: benzene/acetone (4:1). Rf 0.65. Colorless crystals, suitable for X-ray (in the form of the prisms and with size 0.23x0.20x0.18 mm) were obtained from ethanol at room temperature, m.p. 423–425 K.The hydrogen atom of the hydroxyl group were located from a difference Fourier synthesis and were allowed to refine. All other H atoms were placed geometrically (with C—H distances of 0.98 Å for CH; 0.97 Å for CH2; 0.96 Å for CH3; and 0.93 Å for Car) and included in the
in a riding motion approximation with Uiso=1.2Ueq(C) [Uiso=1.5Ueq(C,O) for methyl H atoms].Quinazolin-4(3H)-one and its derivatives are well known to have broad biological activity, such as antibacterial, antifungal, antimicrobial, anticonvulsant and others (Yang et al., 2009). As well as among quinazolin-4(3H)-one derivatives found fungicide, insecticide active compounds for agriculture (Shakhidoyatov, 1988). Reaction of 2,3-dimethylquinazolin-4(3H)-one with chloral hydrate in the of reagent–substrate 1:1.2 ratio resulted in the title compound. The structure of the received product was investigated by X-ray diffraction, 1H NMR, UF and IR methods.
The bond distances and angles in the title compound (Fig. 1) agree very well with the corresponding bond distances and angles reported in closely related compounds (Tashkhodjaev et al., 2001). The molecule has planar quinazolin-4(3H)-one (r.m.s. deviation of 0.0257 Å) and propyl fragment. The angle between planes of quinazolin-4(3H)-one ring and n-propyl fragment is 10.4 (2)°. The sum of bond angles at atom N3 (close to 360°) and bond length indicate sp2 π-electrons of pyrimidine rings.
of atom N3. It indicates that the lone electronic pair of nitrogen atom participate in a conjugation withIn the ═C4 hydrogen bond forms an infinite chain along the b-axis (Figure 2 & Table 1).
of the title compound is observed a cyclic S(6) intramolecular O2—H···N1 hydrogen bond (Bernstein et al., 1995). Another O2—H···O1For the biological properties of quinazolin-4(3H)-one derivatives, see: Yang et al. (2009). For the fungicidal and insecticidal activity and syntheses of quinazolin-4(3H)-one derivatives, see; Shakhidoyatov (1988). For related structures of quinazolin-4(3H)-one derivatives, see; Tashkhodjaev et al. (2001). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Data collection: CrysAlis PRO (Oxford Diffraction, 2009); cell
CrysAlis PRO (Oxford Diffraction, 2009); data reduction: CrysAlis PRO (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and publCIF (Westrip, 2010).C12H11Cl3N2O2 | Dx = 1.566 Mg m−3 |
Mr = 321.58 | Melting point: 423(2) K |
Orthorhombic, Pbca | Cu Kα radiation, λ = 1.54184 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 1044 reflections |
a = 9.3440 (19) Å | θ = 3.4–35.8° |
b = 11.352 (2) Å | µ = 6.09 mm−1 |
c = 25.719 (5) Å | T = 291 K |
V = 2728.2 (10) Å3 | Prizmatic, colorless |
Z = 8 | 0.23 × 0.20 × 0.18 mm |
F(000) = 1312 |
Oxford Diffraction Xcalibur Ruby diffractometer | 2833 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 2273 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
Detector resolution: 10.2576 pixels mm-1 | θmax = 76.4°, θmin = 3.4° |
ω scans | h = −10→11 |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2009) | k = −13→14 |
Tmin = 0.284, Tmax = 0.334 | l = −32→31 |
8631 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)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.116 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0775P)2] where P = (Fo2 + 2Fc2)/3 |
2833 reflections | (Δ/σ)max < 0.001 |
177 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.43 e Å−3 |
C12H11Cl3N2O2 | V = 2728.2 (10) Å3 |
Mr = 321.58 | Z = 8 |
Orthorhombic, Pbca | Cu Kα radiation |
a = 9.3440 (19) Å | µ = 6.09 mm−1 |
b = 11.352 (2) Å | T = 291 K |
c = 25.719 (5) Å | 0.23 × 0.20 × 0.18 mm |
Oxford Diffraction Xcalibur Ruby diffractometer | 2833 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2009) | 2273 reflections with I > 2σ(I) |
Tmin = 0.284, Tmax = 0.334 | Rint = 0.032 |
8631 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.116 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.34 e Å−3 |
2833 reflections | Δρmin = −0.43 e Å−3 |
177 parameters |
Experimental. 1H NMR (400 MHz, DMSO): 8.11 (1H, d, J═7.9 Hz, H-5), 7.80 (1H, t, J═7.9 Hz, H-7), 7.64 (1H, d, J═7.9 Hz, H-8), 7.50 (1H, t, J═7.9 Hz, H-6), 7.06 (1H, b.d, J═4.8 Hz, OH), 4.84 (1H, b.d, J═8.6 Hz, CH-10), 3.46 (1H, m, H-9 e), 3.22 (1H, dd, J═15.6, J═9.2 Hz, H-9a), 3.6 (3H, s, CH3-12). In the IR spectrum of the title compound were observed absorption bands due to the stretching vibrations of 3401 sm-1 for OH, 2829 sm-1 for CH3, 1657 sm-1 for C═O, 1594 sm-1 for C═N, 1563 sm-1 for C═C– groups. Additionally, at 695 sm-1 was observed p–p valence vibrations of the C—Cl group. The UV spectrum of title compound in ethanol is characterized by absorption bands at 225, 266, 305 and 316 nm. |
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 | ||
O1 | 0.5628 (2) | 0.70184 (16) | 0.27949 (7) | 0.0607 (5) | |
N1 | 0.27902 (19) | 0.46334 (15) | 0.22269 (6) | 0.0373 (4) | |
C2 | 0.3539 (2) | 0.53163 (17) | 0.19344 (7) | 0.0331 (4) | |
N3 | 0.44671 (19) | 0.61703 (15) | 0.21185 (6) | 0.0375 (4) | |
C4 | 0.4735 (2) | 0.62977 (19) | 0.26492 (8) | 0.0418 (5) | |
C4A | 0.3879 (2) | 0.5557 (2) | 0.29826 (8) | 0.0427 (5) | |
C5 | 0.3995 (3) | 0.5667 (2) | 0.35264 (9) | 0.0573 (7) | |
H5A | 0.4627 | 0.6208 | 0.3671 | 0.069* | |
C6 | 0.3168 (3) | 0.4969 (3) | 0.38393 (9) | 0.0682 (8) | |
H6A | 0.3253 | 0.5021 | 0.4199 | 0.082* | |
C7 | 0.2197 (3) | 0.4179 (3) | 0.36200 (10) | 0.0640 (8) | |
H7A | 0.1631 | 0.3715 | 0.3836 | 0.077* | |
C8 | 0.2063 (3) | 0.4073 (2) | 0.30879 (9) | 0.0508 (6) | |
H8A | 0.1406 | 0.3548 | 0.2946 | 0.061* | |
C8A | 0.2923 (2) | 0.47628 (19) | 0.27638 (8) | 0.0396 (5) | |
C9 | 0.3415 (2) | 0.52114 (18) | 0.13538 (7) | 0.0379 (4) | |
H9A | 0.4362 | 0.5114 | 0.1206 | 0.046* | |
H9B | 0.3010 | 0.5933 | 0.1215 | 0.046* | |
C10 | 0.2482 (2) | 0.41768 (17) | 0.11937 (7) | 0.0345 (4) | |
H10A | 0.1545 | 0.4256 | 0.1361 | 0.041* | |
C11 | 0.2271 (2) | 0.41360 (18) | 0.06012 (7) | 0.0388 (4) | |
C12 | 0.5242 (3) | 0.6964 (2) | 0.17710 (9) | 0.0499 (6) | |
H12A | 0.4707 | 0.7066 | 0.1455 | 0.075* | |
H12B | 0.6163 | 0.6635 | 0.1692 | 0.075* | |
H12C | 0.5365 | 0.7714 | 0.1938 | 0.075* | |
O2 | 0.3064 (2) | 0.30816 (13) | 0.13248 (6) | 0.0496 (4) | |
Cl1 | 0.10438 (8) | 0.30035 (5) | 0.04356 (2) | 0.0569 (2) | |
Cl2 | 0.15423 (7) | 0.54822 (5) | 0.03761 (2) | 0.05238 (19) | |
Cl3 | 0.38904 (8) | 0.38646 (8) | 0.02721 (3) | 0.0712 (2) | |
H2 | 0.326 (3) | 0.299 (3) | 0.1623 (13) | 0.075 (10)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0610 (10) | 0.0636 (11) | 0.0576 (10) | −0.0084 (10) | −0.0205 (8) | −0.0186 (8) |
N1 | 0.0407 (9) | 0.0369 (9) | 0.0343 (8) | 0.0009 (8) | −0.0039 (7) | −0.0022 (7) |
C2 | 0.0328 (9) | 0.0323 (9) | 0.0342 (9) | 0.0032 (8) | −0.0072 (7) | −0.0039 (7) |
N3 | 0.0378 (8) | 0.0373 (9) | 0.0372 (8) | −0.0012 (8) | −0.0083 (7) | −0.0037 (7) |
C4 | 0.0425 (11) | 0.0428 (11) | 0.0401 (10) | 0.0062 (10) | −0.0121 (9) | −0.0116 (8) |
C4A | 0.0443 (11) | 0.0494 (12) | 0.0345 (10) | 0.0150 (10) | −0.0070 (8) | −0.0056 (8) |
C5 | 0.0608 (15) | 0.0744 (17) | 0.0365 (11) | 0.0162 (13) | −0.0099 (11) | −0.0098 (11) |
C6 | 0.0766 (18) | 0.093 (2) | 0.0348 (11) | 0.0242 (18) | −0.0023 (12) | 0.0001 (13) |
C7 | 0.0720 (18) | 0.0722 (17) | 0.0479 (13) | 0.0240 (15) | 0.0159 (13) | 0.0142 (12) |
C8 | 0.0552 (14) | 0.0496 (13) | 0.0477 (12) | 0.0098 (11) | 0.0052 (10) | 0.0040 (10) |
C8A | 0.0423 (11) | 0.0411 (10) | 0.0355 (9) | 0.0117 (9) | −0.0026 (8) | −0.0018 (8) |
C9 | 0.0425 (10) | 0.0406 (10) | 0.0307 (9) | −0.0041 (9) | −0.0069 (8) | −0.0016 (8) |
C10 | 0.0406 (10) | 0.0345 (10) | 0.0285 (8) | 0.0006 (8) | −0.0059 (8) | 0.0008 (7) |
C11 | 0.0468 (11) | 0.0369 (10) | 0.0326 (9) | 0.0005 (9) | −0.0060 (8) | −0.0012 (8) |
C12 | 0.0498 (13) | 0.0456 (12) | 0.0544 (12) | −0.0112 (11) | −0.0069 (10) | 0.0012 (10) |
O2 | 0.0734 (11) | 0.0352 (7) | 0.0403 (8) | 0.0076 (8) | −0.0213 (8) | 0.0016 (6) |
Cl1 | 0.0771 (4) | 0.0438 (3) | 0.0499 (3) | −0.0108 (3) | −0.0273 (3) | −0.0026 (2) |
Cl2 | 0.0730 (4) | 0.0420 (3) | 0.0421 (3) | 0.0013 (3) | −0.0189 (3) | 0.0088 (2) |
Cl3 | 0.0643 (4) | 0.0993 (6) | 0.0499 (3) | 0.0099 (4) | 0.0118 (3) | −0.0174 (3) |
O1—C4 | 1.227 (3) | C8—C8A | 1.398 (3) |
N1—C2 | 1.287 (3) | C8—H8A | 0.9300 |
N1—C8A | 1.394 (2) | C9—C10 | 1.520 (3) |
C2—N3 | 1.384 (3) | C9—H9A | 0.9700 |
C2—C9 | 1.503 (2) | C9—H9B | 0.9700 |
N3—C4 | 1.395 (2) | C10—O2 | 1.398 (2) |
N3—C12 | 1.462 (3) | C10—C11 | 1.537 (3) |
C4—C4A | 1.443 (3) | C10—H10A | 0.9800 |
C4A—C8A | 1.388 (3) | C11—Cl3 | 1.761 (2) |
C4A—C5 | 1.408 (3) | C11—Cl2 | 1.770 (2) |
C5—C6 | 1.369 (4) | C11—Cl1 | 1.774 (2) |
C5—H5A | 0.9300 | C12—H12A | 0.9600 |
C6—C7 | 1.395 (4) | C12—H12B | 0.9600 |
C6—H6A | 0.9300 | C12—H12C | 0.9600 |
C7—C8 | 1.380 (3) | O2—H2 | 0.80 (3) |
C7—H7A | 0.9300 | ||
C2—N1—C8A | 117.84 (18) | N1—C8A—C8 | 118.7 (2) |
N1—C2—N3 | 124.22 (17) | C2—C9—C10 | 112.01 (16) |
N1—C2—C9 | 119.43 (17) | C2—C9—H9A | 109.2 |
N3—C2—C9 | 116.35 (17) | C10—C9—H9A | 109.2 |
C2—N3—C4 | 121.31 (18) | C2—C9—H9B | 109.2 |
C2—N3—C12 | 122.21 (17) | C10—C9—H9B | 109.2 |
C4—N3—C12 | 116.47 (18) | H9A—C9—H9B | 107.9 |
O1—C4—N3 | 119.3 (2) | O2—C10—C9 | 113.49 (17) |
O1—C4—C4A | 125.7 (2) | O2—C10—C11 | 105.21 (16) |
N3—C4—C4A | 114.95 (18) | C9—C10—C11 | 111.45 (16) |
C8A—C4A—C5 | 120.6 (2) | O2—C10—H10A | 108.9 |
C8A—C4A—C4 | 119.60 (19) | C9—C10—H10A | 108.9 |
C5—C4A—C4 | 119.7 (2) | C11—C10—H10A | 108.9 |
C6—C5—C4A | 119.3 (3) | C10—C11—Cl3 | 111.79 (15) |
C6—C5—H5A | 120.4 | C10—C11—Cl2 | 110.34 (14) |
C4A—C5—H5A | 120.4 | Cl3—C11—Cl2 | 108.92 (12) |
C5—C6—C7 | 120.1 (2) | C10—C11—Cl1 | 110.05 (14) |
C5—C6—H6A | 119.9 | Cl3—C11—Cl1 | 108.24 (11) |
C7—C6—H6A | 119.9 | Cl2—C11—Cl1 | 107.38 (12) |
C8—C7—C6 | 121.1 (3) | N3—C12—H12A | 109.5 |
C8—C7—H7A | 119.5 | N3—C12—H12B | 109.5 |
C6—C7—H7A | 119.5 | H12A—C12—H12B | 109.5 |
C7—C8—C8A | 119.4 (3) | N3—C12—H12C | 109.5 |
C7—C8—H8A | 120.3 | H12A—C12—H12C | 109.5 |
C8A—C8—H8A | 120.3 | H12B—C12—H12C | 109.5 |
C4A—C8A—N1 | 121.8 (2) | C10—O2—H2 | 116 (2) |
C4A—C8A—C8 | 119.5 (2) | ||
C8A—N1—C2—N3 | 0.0 (3) | C5—C4A—C8A—N1 | −179.8 (2) |
C8A—N1—C2—C9 | −179.45 (18) | C4—C4A—C8A—N1 | 1.8 (3) |
N1—C2—N3—C4 | 4.6 (3) | C5—C4A—C8A—C8 | 0.5 (3) |
C9—C2—N3—C4 | −175.97 (19) | C4—C4A—C8A—C8 | −178.0 (2) |
N1—C2—N3—C12 | −176.9 (2) | C2—N1—C8A—C4A | −3.1 (3) |
C9—C2—N3—C12 | 2.6 (3) | C2—N1—C8A—C8 | 176.62 (19) |
C2—N3—C4—O1 | 175.7 (2) | C7—C8—C8A—C4A | −1.2 (3) |
C12—N3—C4—O1 | −2.9 (3) | C7—C8—C8A—N1 | 179.1 (2) |
C2—N3—C4—C4A | −5.5 (3) | N1—C2—C9—C10 | −5.9 (3) |
C12—N3—C4—C4A | 175.87 (18) | N3—C2—C9—C10 | 174.59 (16) |
O1—C4—C4A—C8A | −178.8 (2) | C2—C9—C10—O2 | −65.8 (2) |
N3—C4—C4A—C8A | 2.5 (3) | C2—C9—C10—C11 | 175.64 (17) |
O1—C4—C4A—C5 | 2.7 (3) | O2—C10—C11—Cl3 | −58.26 (19) |
N3—C4—C4A—C5 | −176.0 (2) | C9—C10—C11—Cl3 | 65.1 (2) |
C8A—C4A—C5—C6 | 0.9 (4) | O2—C10—C11—Cl2 | −179.63 (14) |
C4—C4A—C5—C6 | 179.3 (2) | C9—C10—C11—Cl2 | −56.2 (2) |
C4A—C5—C6—C7 | −1.5 (4) | O2—C10—C11—Cl1 | 62.0 (2) |
C5—C6—C7—C8 | 0.8 (4) | C9—C10—C11—Cl1 | −174.54 (14) |
C6—C7—C8—C8A | 0.5 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···N1 | 0.79 (3) | 2.47 (3) | 2.924 (2) | 118 (3) |
O2—H2···O1i | 0.79 (3) | 2.13 (3) | 2.842 (2) | 149 (3) |
Symmetry code: (i) −x+1, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C12H11Cl3N2O2 |
Mr | 321.58 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 291 |
a, b, c (Å) | 9.3440 (19), 11.352 (2), 25.719 (5) |
V (Å3) | 2728.2 (10) |
Z | 8 |
Radiation type | Cu Kα |
µ (mm−1) | 6.09 |
Crystal size (mm) | 0.23 × 0.20 × 0.18 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Ruby |
Absorption correction | Multi-scan (CrysAlis PRO; Oxford Diffraction, 2009) |
Tmin, Tmax | 0.284, 0.334 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8631, 2833, 2273 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.630 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.116, 1.03 |
No. of reflections | 2833 |
No. of parameters | 177 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.34, −0.43 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···N1 | 0.79 (3) | 2.47 (3) | 2.924 (2) | 118 (3) |
O2—H2···O1i | 0.79 (3) | 2.13 (3) | 2.842 (2) | 149 (3) |
Symmetry code: (i) −x+1, y−1/2, −z+1/2. |
Acknowledgements
We thank the Academy of Sciences of the Republic of Uzbekistan for supporting this study (grant FA-F7-T185).
References
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Quinazolin-4(3H)-one and its derivatives are well known to have broad biological activity, such as antibacterial, antifungal, antimicrobial, anticonvulsant and others (Yang et al., 2009). As well as among quinazolin-4(3H)-one derivatives found fungicide, insecticide active compounds for agriculture (Shakhidoyatov, 1988). Reaction of 2,3-dimethylquinazolin-4(3H)-one with chloral hydrate in the of reagent–substrate 1:1.2 ratio resulted in the title compound. The structure of the received product was investigated by X-ray diffraction, 1H NMR, UF and IR methods.
The bond distances and angles in the title compound (Fig. 1) agree very well with the corresponding bond distances and angles reported in closely related compounds (Tashkhodjaev et al., 2001). The molecule has planar quinazolin-4(3H)-one (r.m.s. deviation of 0.0257 Å) and propyl fragment. The angle between planes of quinazolin-4(3H)-one ring and n-propyl fragment is 10.4 (2)°. The sum of bond angles at atom N3 (close to 360°) and bond length indicate sp2 hybridization of atom N3. It indicates that the lone electronic pair of nitrogen atom participate in a conjugation with π-electrons of pyrimidine rings.
In the crystal structure of the title compound is observed a cyclic S(6) intramolecular O2—H···N1 hydrogen bond (Bernstein et al., 1995). Another O2—H···O1═C4 hydrogen bond forms an infinite chain along the b-axis (Figure 2 & Table 1).