organic compounds
(E)-3-[(Dimethylamino)methylidene]-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one
aLaboratoire de Chimie Moléculaire, Département de Chimie, Faculté des Sciences-Semlalia, BP 2390, Université Cadi Ayyad, 40001, Marrakech, Morocco, bDepartment of Chemistry, University of Aveiro, CICECO, 3810-193, Aveiro, Portugal, cLaboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis ElManar, 2092 ElManar II, Tunis, Tunisia, and dEquipe de Chimie des Matériaux et de l'Environnement, FSTG-Marrakech, Université Cadi Ayyad, Bd Abdelkrim Khattabi, BP. 549, Marrakech, Morocco
*Correspondence e-mail: eh_soumhi@yahoo.fr
The 18H17N3O, consists of two independent molecules, each having an E conformation with respect to the C=C bond between the benzodiazepinone and dimethylamine groups. In the crystal, the two independent molecules are linked into a dimer by a pair of N—H⋯O hydrogen bonds.
of the title compound, CCCDC reference: 978905
Related literature
For background to natural benzodiazepines and their properties, see: Di Braccio et al. (2001); Kavita et al. (1988). For the synthesis, see: Nardi et al. (1973). For a related structure, see: Loughzail et al. (2014).
Experimental
Crystal data
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Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1989); cell CAD-4 EXPRESS; data reduction: MolEN (Fair, 1990); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
CCDC reference: 978905
10.1107/S1600536813034739/is5330sup1.cif
contains datablocks I, hassi4. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813034739/is5330Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813034739/is5330Isup3.cml
A mixture of 0.47 g (1.98 mmol) of 4-phenyl-1H-1,5-benzodiazepin-2(3H)-one in 4.5 ml of dimethylformamide-dimethylacetal (DMF-DMA) was stirred at 100 °C for 4 h and then cooled to ambient temperature. Filtration and washing with a little cold diethyl ether gave 0.46 g of (E)-3-[(dimethylamino)methylene]-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one. The product obtained was recrystallized from diethyl ether. Yield: 75%. Melting point: 497–498 K. 1H NMR (CDCl3, 300 MHz): δ 2.55 (s, 6H, (CH3)2N), 2.80 (s, 1H, NH), 6.32 (s, 1H, C=CH—N), 7.04–7.92 (m, 9H, H—Ar); 13C NMR (CDCl3, 75 MHz): δ 43.50 (N(CH3)2), 98.02 (C=), 121.47–141.86 (12 C-Ar), 151.18 (CH—N(CH3)2), 167.40 (Ph—C=N), 178.57 (CO). MS (m/z, %): 292 ([M+H]+.
All H-atoms were located in a difference map and then refined using a riding model with N—H = 0.86 Å and C—H = 0.93–0.96 Å, and with Uiso(H) = 1.2Ueq(N, C) or 1.5Ueq(Cmethyl).
The benzodiazepine nucleus is a pharmacophoric scaffold and represents a class of heterocycles with a wide range of applications. In particular, several representative benzodiazepines possess significant biological activity as antiviral (Di Braccio et al., 2001), antipsychotic agents (Kavita et al., 1988) and may be considered support for the synthesis of more active heterocyclic systems. Research in this area is highly active being directed towards the synthesis of compounds with enhanced pharmacological activity. Following the research efforts from some of us concerning novel synthetic pathways of new benzodiazepines (Loughzail et al., 2014).
The reaction of N,N-dimethylformamide dimethylacetal (DMF-DMA) in 4-phenyl-1H-1,5-benzodiazepin-2(3H)-one (Nardi et al., 1973) at reflux leads to the formation of the title compound, (E)-3-[(dimethylamino)methylene]-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one with a good yield of 75%. The main geometric feature determined by X-ray diffraction is in good agreement with that observed in a similar compound (Loughzail et al., 2014).
For background to natural benzodiazepines and their properties, see: Di Braccio et al. (2001); Kavita et al. (1988). For the synthesis, see: Nardi et al. (1973). For a related structure, see: Loughzail et al. (2014).
Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1989); cell
CAD-4 EXPRESS (Enraf–Nonius, 1989); data reduction: MolEN (Fair, 1990); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).C18H17N3O | F(000) = 1232 |
Mr = 291.35 | Dx = 1.224 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 25 reflections |
a = 11.281 (2) Å | θ = 10–15° |
b = 14.005 (4) Å | µ = 0.08 mm−1 |
c = 20.124 (3) Å | T = 300 K |
β = 95.97 (1)° | Prism, colourless |
V = 3162.1 (12) Å3 | 0.3 × 0.15 × 0.1 mm |
Z = 8 |
Enraf–Nonius CAD-4 diffractometer | 3575 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.034 |
Graphite monochromator | θmax = 27.0°, θmin = 2.0° |
ω/2θ scans | h = −14→2 |
Absorption correction: ψ scan (North et al., 1968) | k = −1→17 |
Tmin = 0.521, Tmax = 0.992 | l = −25→25 |
8620 measured reflections | 2 standard reflections every 60 min |
6879 independent reflections | intensity decay: 1% |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.052 | H-atom parameters constrained |
wR(F2) = 0.158 | w = 1/[σ2(Fo2) + (0.0688P)2 + 0.4349P] where P = (Fo2 + 2Fc2)/3 |
S = 1.01 | (Δ/σ)max < 0.001 |
6879 reflections | Δρmax = 0.29 e Å−3 |
402 parameters | Δρmin = −0.23 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.016 (2) |
C18H17N3O | V = 3162.1 (12) Å3 |
Mr = 291.35 | Z = 8 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.281 (2) Å | µ = 0.08 mm−1 |
b = 14.005 (4) Å | T = 300 K |
c = 20.124 (3) Å | 0.3 × 0.15 × 0.1 mm |
β = 95.97 (1)° |
Enraf–Nonius CAD-4 diffractometer | 3575 reflections with I > 2σ(I) |
Absorption correction: ψ scan (North et al., 1968) | Rint = 0.034 |
Tmin = 0.521, Tmax = 0.992 | 2 standard reflections every 60 min |
8620 measured reflections | intensity decay: 1% |
6879 independent reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.158 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.29 e Å−3 |
6879 reflections | Δρmin = −0.23 e Å−3 |
402 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 | ||
O1 | 0.87561 (14) | 0.89599 (11) | 0.18529 (8) | 0.0622 (4) | |
O2 | 0.10910 (14) | −0.10731 (12) | 0.31490 (8) | 0.0642 (4) | |
N1 | 0.90374 (15) | 0.78432 (12) | 0.26535 (9) | 0.0539 (5) | |
HN1 | 0.9796 | 0.7923 | 0.2677 | 0.065* | |
N2 | 0.74209 (15) | 0.62029 (12) | 0.23855 (9) | 0.0511 (4) | |
N3 | 0.51730 (17) | 0.83342 (15) | 0.14714 (10) | 0.0680 (6) | |
N4 | 0.08974 (16) | 0.00488 (14) | 0.23437 (10) | 0.0601 (5) | |
HN4 | 0.0145 | 0.0109 | 0.2371 | 0.072* | |
N5 | 0.28648 (17) | 0.14261 (13) | 0.24917 (10) | 0.0567 (5) | |
N6 | 0.47471 (16) | −0.10080 (14) | 0.32360 (10) | 0.0585 (5) | |
C1 | 0.83674 (18) | 0.82566 (15) | 0.21290 (11) | 0.0486 (5) | |
C2 | 0.85993 (18) | 0.72976 (14) | 0.31600 (11) | 0.0486 (5) | |
C3 | 0.9039 (2) | 0.75029 (17) | 0.38144 (12) | 0.0652 (6) | |
H3 | 0.9601 | 0.7986 | 0.3898 | 0.078* | |
C4 | 0.8659 (3) | 0.7007 (2) | 0.43365 (13) | 0.0836 (9) | |
H4 | 0.8957 | 0.7155 | 0.4773 | 0.100* | |
C5 | 0.7829 (3) | 0.6283 (2) | 0.42131 (14) | 0.0809 (8) | |
H5 | 0.7547 | 0.5957 | 0.4567 | 0.097* | |
C6 | 0.7425 (2) | 0.60485 (16) | 0.35695 (12) | 0.0623 (6) | |
H6 | 0.6893 | 0.5544 | 0.3492 | 0.075* | |
C7 | 0.77890 (18) | 0.65458 (14) | 0.30303 (11) | 0.0477 (5) | |
C8 | 0.71591 (17) | 0.67685 (15) | 0.18894 (11) | 0.0469 (5) | |
C9 | 0.71974 (18) | 0.78242 (14) | 0.19149 (10) | 0.0477 (5) | |
C10 | 0.6341 (2) | 0.84542 (16) | 0.16682 (11) | 0.0549 (6) | |
H10 | 0.6611 | 0.9077 | 0.1629 | 0.066* | |
C11 | 0.4533 (2) | 0.7461 (2) | 0.15408 (15) | 0.0837 (8) | |
H111 | 0.4967 | 0.7066 | 0.1872 | 0.126* | |
H211 | 0.4443 | 0.7131 | 0.1121 | 0.126* | |
H311 | 0.3761 | 0.7602 | 0.1676 | 0.126* | |
C12 | 0.4456 (3) | 0.9158 (2) | 0.12312 (16) | 0.0989 (10) | |
H112 | 0.4955 | 0.9713 | 0.1234 | 0.148* | |
H212 | 0.3840 | 0.9264 | 0.1518 | 0.148* | |
H312 | 0.4102 | 0.9038 | 0.0784 | 0.148* | |
C13 | 0.68919 (18) | 0.63175 (15) | 0.12197 (11) | 0.0512 (5) | |
C14 | 0.6549 (2) | 0.53721 (17) | 0.11563 (13) | 0.0635 (6) | |
H14 | 0.6437 | 0.5018 | 0.1536 | 0.076* | |
C15 | 0.6372 (2) | 0.4951 (2) | 0.05380 (15) | 0.0791 (8) | |
H15 | 0.6151 | 0.4312 | 0.0503 | 0.095* | |
C16 | 0.6517 (2) | 0.5463 (2) | −0.00301 (14) | 0.0776 (8) | |
H16 | 0.6382 | 0.5174 | −0.0447 | 0.093* | |
C17 | 0.6853 (3) | 0.6380 (2) | 0.00206 (14) | 0.0797 (8) | |
H17 | 0.6958 | 0.6727 | −0.0363 | 0.096* | |
C18 | 0.7045 (2) | 0.68149 (18) | 0.06404 (12) | 0.0703 (7) | |
H18 | 0.7281 | 0.7451 | 0.0668 | 0.084* | |
C19 | 0.15585 (18) | −0.04443 (15) | 0.28393 (11) | 0.0500 (5) | |
C20 | 0.13736 (19) | 0.04637 (15) | 0.17907 (11) | 0.0531 (5) | |
C21 | 0.0847 (2) | 0.02598 (18) | 0.11569 (13) | 0.0697 (7) | |
H21 | 0.0178 | −0.0131 | 0.1106 | 0.084* | |
C22 | 0.1294 (3) | 0.0624 (2) | 0.06001 (14) | 0.0822 (8) | |
H22 | 0.0942 | 0.0465 | 0.0176 | 0.099* | |
C23 | 0.2269 (3) | 0.1228 (2) | 0.06716 (14) | 0.0815 (8) | |
H23 | 0.2584 | 0.1467 | 0.0296 | 0.098* | |
C24 | 0.2770 (2) | 0.14734 (18) | 0.13008 (13) | 0.0701 (7) | |
H24 | 0.3405 | 0.1900 | 0.1347 | 0.084* | |
C25 | 0.2344 (2) | 0.10956 (15) | 0.18699 (12) | 0.0539 (6) | |
C26 | 0.31176 (18) | 0.08457 (15) | 0.29803 (11) | 0.0497 (5) | |
C27 | 0.28278 (18) | −0.01887 (14) | 0.29681 (10) | 0.0467 (5) | |
C28 | 0.35540 (19) | −0.09421 (15) | 0.31387 (10) | 0.0499 (5) | |
H28 | 0.3156 | −0.1512 | 0.3199 | 0.060* | |
C29 | 0.5536 (2) | −0.0227 (2) | 0.31182 (14) | 0.0718 (7) | |
H129 | 0.5744 | 0.0112 | 0.3528 | 0.108* | |
H229 | 0.5142 | 0.0199 | 0.2793 | 0.108* | |
H329 | 0.6245 | −0.0474 | 0.2955 | 0.108* | |
C30 | 0.5312 (2) | −0.19260 (19) | 0.33861 (13) | 0.0728 (7) | |
H130 | 0.5894 | −0.1863 | 0.3767 | 0.109* | |
H230 | 0.5695 | −0.2138 | 0.3008 | 0.109* | |
H330 | 0.4719 | −0.2384 | 0.3482 | 0.109* | |
C31 | 0.3668 (2) | 0.12737 (16) | 0.36159 (11) | 0.0536 (6) | |
C32 | 0.3746 (2) | 0.07799 (18) | 0.42135 (12) | 0.0730 (7) | |
H32 | 0.3446 | 0.0162 | 0.4223 | 0.088* | |
C33 | 0.4262 (3) | 0.1191 (2) | 0.47966 (14) | 0.0976 (11) | |
H33 | 0.4293 | 0.0854 | 0.5196 | 0.117* | |
C34 | 0.4727 (3) | 0.2090 (2) | 0.47906 (15) | 0.1087 (12) | |
H34 | 0.5081 | 0.2364 | 0.5183 | 0.130* | |
C35 | 0.4668 (3) | 0.2583 (2) | 0.42020 (15) | 0.1003 (11) | |
H35 | 0.4987 | 0.3194 | 0.4196 | 0.120* | |
C36 | 0.4145 (3) | 0.21896 (18) | 0.36220 (13) | 0.0740 (7) | |
H36 | 0.4107 | 0.2539 | 0.3227 | 0.089* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0509 (9) | 0.0479 (8) | 0.0874 (11) | −0.0082 (7) | 0.0046 (8) | 0.0143 (8) |
O2 | 0.0491 (9) | 0.0686 (10) | 0.0742 (11) | −0.0202 (8) | 0.0027 (8) | 0.0177 (9) |
N1 | 0.0366 (9) | 0.0559 (11) | 0.0683 (12) | −0.0045 (8) | 0.0019 (8) | 0.0091 (9) |
N2 | 0.0454 (10) | 0.0447 (10) | 0.0626 (12) | −0.0035 (8) | 0.0027 (8) | −0.0017 (9) |
N3 | 0.0468 (12) | 0.0712 (13) | 0.0834 (15) | 0.0108 (10) | −0.0054 (10) | 0.0044 (11) |
N4 | 0.0365 (9) | 0.0664 (12) | 0.0765 (13) | −0.0051 (9) | 0.0013 (9) | 0.0148 (10) |
N5 | 0.0551 (11) | 0.0481 (10) | 0.0658 (12) | −0.0115 (9) | 0.0012 (9) | 0.0047 (9) |
N6 | 0.0420 (10) | 0.0619 (12) | 0.0709 (12) | 0.0019 (9) | 0.0032 (9) | 0.0023 (10) |
C1 | 0.0413 (11) | 0.0409 (11) | 0.0644 (14) | 0.0021 (10) | 0.0093 (10) | −0.0022 (10) |
C2 | 0.0438 (11) | 0.0425 (11) | 0.0600 (13) | 0.0008 (10) | 0.0077 (10) | 0.0005 (10) |
C3 | 0.0710 (16) | 0.0593 (14) | 0.0645 (16) | −0.0153 (13) | 0.0033 (12) | −0.0046 (12) |
C4 | 0.110 (2) | 0.0819 (19) | 0.0580 (16) | −0.0237 (18) | 0.0056 (15) | −0.0044 (14) |
C5 | 0.106 (2) | 0.0754 (18) | 0.0628 (17) | −0.0220 (17) | 0.0155 (15) | 0.0092 (14) |
C6 | 0.0689 (16) | 0.0502 (13) | 0.0682 (16) | −0.0122 (12) | 0.0097 (12) | 0.0038 (12) |
C7 | 0.0445 (12) | 0.0385 (11) | 0.0603 (14) | 0.0037 (9) | 0.0061 (10) | 0.0010 (10) |
C8 | 0.0345 (10) | 0.0446 (11) | 0.0613 (13) | −0.0015 (9) | 0.0042 (9) | 0.0022 (10) |
C9 | 0.0408 (11) | 0.0446 (11) | 0.0576 (13) | −0.0010 (10) | 0.0041 (9) | 0.0019 (10) |
C10 | 0.0491 (13) | 0.0514 (13) | 0.0639 (14) | 0.0027 (10) | 0.0044 (11) | 0.0032 (11) |
C11 | 0.0438 (14) | 0.102 (2) | 0.104 (2) | −0.0068 (15) | 0.0016 (13) | −0.0067 (17) |
C12 | 0.0777 (19) | 0.103 (2) | 0.110 (2) | 0.0393 (18) | −0.0192 (17) | 0.0020 (19) |
C13 | 0.0387 (11) | 0.0495 (12) | 0.0645 (14) | −0.0028 (10) | 0.0011 (10) | −0.0013 (11) |
C14 | 0.0614 (15) | 0.0550 (14) | 0.0714 (16) | −0.0099 (12) | −0.0057 (12) | −0.0020 (12) |
C15 | 0.082 (2) | 0.0627 (16) | 0.089 (2) | −0.0123 (15) | −0.0093 (16) | −0.0156 (15) |
C16 | 0.0734 (18) | 0.087 (2) | 0.0711 (18) | −0.0075 (16) | 0.0034 (14) | −0.0215 (16) |
C17 | 0.092 (2) | 0.0838 (19) | 0.0646 (17) | −0.0135 (17) | 0.0120 (15) | −0.0045 (15) |
C18 | 0.0849 (19) | 0.0615 (15) | 0.0653 (16) | −0.0156 (14) | 0.0109 (13) | −0.0039 (13) |
C19 | 0.0417 (11) | 0.0479 (12) | 0.0600 (13) | −0.0059 (10) | 0.0034 (10) | 0.0004 (11) |
C20 | 0.0448 (12) | 0.0485 (12) | 0.0648 (14) | −0.0028 (10) | 0.0006 (10) | 0.0104 (11) |
C21 | 0.0643 (15) | 0.0639 (15) | 0.0769 (18) | −0.0145 (13) | −0.0126 (13) | 0.0119 (13) |
C22 | 0.092 (2) | 0.0830 (19) | 0.0667 (17) | −0.0213 (17) | −0.0142 (15) | 0.0137 (15) |
C23 | 0.091 (2) | 0.085 (2) | 0.0670 (17) | −0.0198 (17) | 0.0016 (15) | 0.0234 (15) |
C24 | 0.0685 (16) | 0.0655 (16) | 0.0743 (17) | −0.0169 (13) | −0.0026 (13) | 0.0227 (13) |
C25 | 0.0505 (13) | 0.0431 (11) | 0.0670 (15) | −0.0024 (10) | 0.0001 (11) | 0.0091 (11) |
C26 | 0.0404 (11) | 0.0474 (12) | 0.0619 (14) | −0.0084 (10) | 0.0082 (10) | 0.0004 (11) |
C27 | 0.0399 (11) | 0.0450 (11) | 0.0546 (12) | −0.0071 (9) | 0.0023 (9) | 0.0016 (9) |
C28 | 0.0465 (12) | 0.0484 (12) | 0.0544 (13) | −0.0078 (10) | 0.0034 (10) | 0.0024 (10) |
C29 | 0.0438 (13) | 0.0841 (18) | 0.0881 (18) | −0.0093 (13) | 0.0100 (12) | −0.0039 (15) |
C30 | 0.0660 (16) | 0.0797 (18) | 0.0723 (16) | 0.0218 (14) | 0.0058 (13) | 0.0049 (14) |
C31 | 0.0510 (13) | 0.0514 (13) | 0.0596 (14) | −0.0110 (10) | 0.0118 (10) | −0.0028 (11) |
C32 | 0.092 (2) | 0.0630 (16) | 0.0647 (16) | −0.0243 (15) | 0.0117 (14) | 0.0000 (13) |
C33 | 0.142 (3) | 0.094 (2) | 0.0561 (16) | −0.041 (2) | 0.0066 (17) | −0.0020 (15) |
C34 | 0.158 (3) | 0.103 (2) | 0.0644 (18) | −0.064 (2) | 0.0082 (19) | −0.0160 (17) |
C35 | 0.144 (3) | 0.0776 (19) | 0.080 (2) | −0.058 (2) | 0.013 (2) | −0.0136 (16) |
C36 | 0.0922 (19) | 0.0621 (15) | 0.0684 (16) | −0.0279 (15) | 0.0123 (14) | −0.0016 (13) |
O1—C1 | 1.234 (2) | C14—C15 | 1.372 (3) |
O2—C19 | 1.229 (2) | C14—H14 | 0.9300 |
N1—C1 | 1.362 (3) | C15—C16 | 1.373 (4) |
N1—C2 | 1.404 (3) | C15—H15 | 0.9300 |
N1—HN1 | 0.8600 | C16—C17 | 1.341 (4) |
N2—C8 | 1.285 (3) | C16—H16 | 0.9300 |
N2—C7 | 1.405 (3) | C17—C18 | 1.385 (3) |
N3—C10 | 1.346 (3) | C17—H17 | 0.9300 |
N3—C11 | 1.434 (3) | C18—H18 | 0.9300 |
N3—C12 | 1.462 (3) | C19—C27 | 1.473 (3) |
N4—C19 | 1.369 (3) | C20—C21 | 1.380 (3) |
N4—C20 | 1.410 (3) | C20—C25 | 1.404 (3) |
N4—HN4 | 0.8600 | C21—C22 | 1.374 (4) |
N5—C26 | 1.285 (3) | C21—H21 | 0.9300 |
N5—C25 | 1.404 (3) | C22—C23 | 1.383 (4) |
N6—C28 | 1.343 (3) | C22—H22 | 0.9300 |
N6—C29 | 1.445 (3) | C23—C24 | 1.375 (3) |
N6—C30 | 1.452 (3) | C23—H23 | 0.9300 |
C1—C9 | 1.475 (3) | C24—C25 | 1.392 (3) |
C2—C3 | 1.388 (3) | C24—H24 | 0.9300 |
C2—C7 | 1.401 (3) | C26—C27 | 1.485 (3) |
C3—C4 | 1.365 (3) | C26—C31 | 1.488 (3) |
C3—H3 | 0.9300 | C27—C28 | 1.358 (3) |
C4—C5 | 1.385 (4) | C28—H28 | 0.9300 |
C4—H4 | 0.9300 | C29—H129 | 0.9600 |
C5—C6 | 1.368 (3) | C29—H229 | 0.9600 |
C5—H5 | 0.9300 | C29—H329 | 0.9600 |
C6—C7 | 1.387 (3) | C30—H130 | 0.9600 |
C6—H6 | 0.9300 | C30—H230 | 0.9600 |
C8—C9 | 1.480 (3) | C30—H330 | 0.9600 |
C8—C13 | 1.490 (3) | C31—C32 | 1.382 (3) |
C9—C10 | 1.364 (3) | C31—C36 | 1.390 (3) |
C10—H10 | 0.9300 | C32—C33 | 1.381 (4) |
C11—H111 | 0.9600 | C32—H32 | 0.9300 |
C11—H211 | 0.9600 | C33—C34 | 1.364 (4) |
C11—H311 | 0.9600 | C33—H33 | 0.9300 |
C12—H112 | 0.9600 | C34—C35 | 1.366 (4) |
C12—H212 | 0.9600 | C34—H34 | 0.9300 |
C12—H312 | 0.9600 | C35—C36 | 1.368 (4) |
C13—C14 | 1.381 (3) | C35—H35 | 0.9300 |
C13—C18 | 1.384 (3) | C36—H36 | 0.9300 |
C1—N1—C2 | 125.81 (18) | C15—C16—H16 | 120.2 |
C1—N1—HN1 | 117.1 | C16—C17—C18 | 120.4 (3) |
C2—N1—HN1 | 117.1 | C16—C17—H17 | 119.8 |
C8—N2—C7 | 121.94 (18) | C18—C17—H17 | 119.8 |
C10—N3—C11 | 124.4 (2) | C13—C18—C17 | 121.0 (2) |
C10—N3—C12 | 119.3 (2) | C13—C18—H18 | 119.5 |
C11—N3—C12 | 116.0 (2) | C17—C18—H18 | 119.5 |
C19—N4—C20 | 124.02 (18) | O2—C19—N4 | 120.08 (19) |
C19—N4—HN4 | 118.0 | O2—C19—C27 | 123.1 (2) |
C20—N4—HN4 | 118.0 | N4—C19—C27 | 116.86 (18) |
C26—N5—C25 | 120.83 (18) | C21—C20—C25 | 119.4 (2) |
C28—N6—C29 | 123.3 (2) | C21—C20—N4 | 118.8 (2) |
C28—N6—C30 | 120.1 (2) | C25—C20—N4 | 121.8 (2) |
C29—N6—C30 | 116.09 (19) | C22—C21—C20 | 121.2 (2) |
O1—C1—N1 | 119.60 (19) | C22—C21—H21 | 119.4 |
O1—C1—C9 | 123.0 (2) | C20—C21—H21 | 119.4 |
N1—C1—C9 | 117.35 (18) | C21—C22—C23 | 119.8 (3) |
C3—C2—C7 | 119.6 (2) | C21—C22—H22 | 120.1 |
C3—C2—N1 | 117.26 (19) | C23—C22—H22 | 120.1 |
C7—C2—N1 | 123.1 (2) | C24—C23—C22 | 119.6 (3) |
C4—C3—C2 | 121.0 (2) | C24—C23—H23 | 120.2 |
C4—C3—H3 | 119.5 | C22—C23—H23 | 120.2 |
C2—C3—H3 | 119.5 | C23—C24—C25 | 121.3 (2) |
C3—C4—C5 | 119.7 (2) | C23—C24—H24 | 119.4 |
C3—C4—H4 | 120.2 | C25—C24—H24 | 119.4 |
C5—C4—H4 | 120.2 | C24—C25—C20 | 118.6 (2) |
C6—C5—C4 | 119.9 (2) | C24—C25—N5 | 117.4 (2) |
C6—C5—H5 | 120.0 | C20—C25—N5 | 123.9 (2) |
C4—C5—H5 | 120.0 | N5—C26—C27 | 125.0 (2) |
C5—C6—C7 | 121.5 (2) | N5—C26—C31 | 116.26 (19) |
C5—C6—H6 | 119.2 | C27—C26—C31 | 118.60 (19) |
C7—C6—H6 | 119.2 | C28—C27—C19 | 113.94 (18) |
C6—C7—C2 | 118.2 (2) | C28—C27—C26 | 128.89 (19) |
C6—C7—N2 | 117.88 (19) | C19—C27—C26 | 116.65 (18) |
C2—C7—N2 | 123.59 (19) | N6—C28—C27 | 131.3 (2) |
N2—C8—C9 | 125.8 (2) | N6—C28—H28 | 114.4 |
N2—C8—C13 | 116.74 (18) | C27—C28—H28 | 114.4 |
C9—C8—C13 | 117.21 (19) | N6—C29—H129 | 109.5 |
C10—C9—C1 | 114.81 (18) | N6—C29—H229 | 109.5 |
C10—C9—C8 | 128.1 (2) | H129—C29—H229 | 109.5 |
C1—C9—C8 | 116.25 (18) | N6—C29—H329 | 109.5 |
N3—C10—C9 | 131.4 (2) | H129—C29—H329 | 109.5 |
N3—C10—H10 | 114.3 | H229—C29—H329 | 109.5 |
C9—C10—H10 | 114.3 | N6—C30—H130 | 109.5 |
N3—C11—H111 | 109.5 | N6—C30—H230 | 109.5 |
N3—C11—H211 | 109.5 | H130—C30—H230 | 109.5 |
H111—C11—H211 | 109.5 | N6—C30—H330 | 109.5 |
N3—C11—H311 | 109.5 | H130—C30—H330 | 109.5 |
H111—C11—H311 | 109.5 | H230—C30—H330 | 109.5 |
H211—C11—H311 | 109.5 | C32—C31—C36 | 117.7 (2) |
N3—C12—H112 | 109.5 | C32—C31—C26 | 121.9 (2) |
N3—C12—H212 | 109.5 | C36—C31—C26 | 120.4 (2) |
H112—C12—H212 | 109.5 | C33—C32—C31 | 120.9 (2) |
N3—C12—H312 | 109.5 | C33—C32—H32 | 119.5 |
H112—C12—H312 | 109.5 | C31—C32—H32 | 119.5 |
H212—C12—H312 | 109.5 | C34—C33—C32 | 120.4 (3) |
C14—C13—C18 | 117.6 (2) | C34—C33—H33 | 119.8 |
C14—C13—C8 | 121.2 (2) | C32—C33—H33 | 119.8 |
C18—C13—C8 | 121.1 (2) | C33—C34—C35 | 119.3 (3) |
C15—C14—C13 | 120.5 (2) | C33—C34—H34 | 120.3 |
C15—C14—H14 | 119.7 | C35—C34—H34 | 120.3 |
C13—C14—H14 | 119.7 | C34—C35—C36 | 121.0 (3) |
C14—C15—C16 | 120.8 (3) | C34—C35—H35 | 119.5 |
C14—C15—H15 | 119.6 | C36—C35—H35 | 119.5 |
C16—C15—H15 | 119.6 | C35—C36—C31 | 120.7 (2) |
C17—C16—C15 | 119.6 (3) | C35—C36—H36 | 119.6 |
C17—C16—H16 | 120.2 | C31—C36—H36 | 119.6 |
C2—N1—C1—O1 | 155.3 (2) | C20—N4—C19—O2 | −152.1 (2) |
C2—N1—C1—C9 | −25.2 (3) | C20—N4—C19—C27 | 27.3 (3) |
C1—N1—C2—C3 | −133.3 (2) | C19—N4—C20—C21 | 128.2 (2) |
C1—N1—C2—C7 | 49.3 (3) | C19—N4—C20—C25 | −53.5 (3) |
C7—C2—C3—C4 | −2.5 (4) | C25—C20—C21—C22 | 3.5 (4) |
N1—C2—C3—C4 | 179.9 (2) | N4—C20—C21—C22 | −178.2 (2) |
C2—C3—C4—C5 | 0.5 (4) | C20—C21—C22—C23 | −1.8 (4) |
C3—C4—C5—C6 | 2.1 (5) | C21—C22—C23—C24 | −1.2 (4) |
C4—C5—C6—C7 | −2.7 (4) | C22—C23—C24—C25 | 2.6 (4) |
C5—C6—C7—C2 | 0.6 (4) | C23—C24—C25—C20 | −0.9 (4) |
C5—C6—C7—N2 | 174.1 (2) | C23—C24—C25—N5 | −176.5 (2) |
C3—C2—C7—C6 | 2.0 (3) | C21—C20—C25—C24 | −2.1 (3) |
N1—C2—C7—C6 | 179.4 (2) | N4—C20—C25—C24 | 179.7 (2) |
C3—C2—C7—N2 | −171.1 (2) | C21—C20—C25—N5 | 173.2 (2) |
N1—C2—C7—N2 | 6.3 (3) | N4—C20—C25—N5 | −5.0 (3) |
C8—N2—C7—C6 | 144.1 (2) | C26—N5—C25—C24 | −138.0 (2) |
C8—N2—C7—C2 | −42.8 (3) | C26—N5—C25—C20 | 46.6 (3) |
C7—N2—C8—C9 | −0.2 (3) | C25—N5—C26—C27 | −4.4 (3) |
C7—N2—C8—C13 | 174.40 (18) | C25—N5—C26—C31 | 179.93 (19) |
O1—C1—C9—C10 | −33.0 (3) | O2—C19—C27—C28 | 35.1 (3) |
N1—C1—C9—C10 | 147.5 (2) | N4—C19—C27—C28 | −144.2 (2) |
O1—C1—C9—C8 | 137.2 (2) | O2—C19—C27—C26 | −137.4 (2) |
N1—C1—C9—C8 | −42.3 (3) | N4—C19—C27—C26 | 43.3 (3) |
N2—C8—C9—C10 | −130.9 (2) | N5—C26—C27—C28 | 129.4 (3) |
C13—C8—C9—C10 | 54.6 (3) | C31—C26—C27—C28 | −55.0 (3) |
N2—C8—C9—C1 | 60.4 (3) | N5—C26—C27—C19 | −59.4 (3) |
C13—C8—C9—C1 | −114.2 (2) | C31—C26—C27—C19 | 116.1 (2) |
C11—N3—C10—C9 | 5.8 (4) | C29—N6—C28—C27 | −5.0 (4) |
C12—N3—C10—C9 | 179.3 (3) | C30—N6—C28—C27 | −176.9 (2) |
C1—C9—C10—N3 | −174.9 (2) | C19—C27—C28—N6 | 173.6 (2) |
C8—C9—C10—N3 | 16.2 (4) | C26—C27—C28—N6 | −15.0 (4) |
N2—C8—C13—C14 | 21.1 (3) | N5—C26—C31—C32 | 165.7 (2) |
C9—C8—C13—C14 | −163.9 (2) | C27—C26—C31—C32 | −10.3 (3) |
N2—C8—C13—C18 | −155.1 (2) | N5—C26—C31—C36 | −15.5 (3) |
C9—C8—C13—C18 | 19.9 (3) | C27—C26—C31—C36 | 168.6 (2) |
C18—C13—C14—C15 | 0.1 (4) | C36—C31—C32—C33 | 1.0 (4) |
C8—C13—C14—C15 | −176.3 (2) | C26—C31—C32—C33 | 179.9 (3) |
C13—C14—C15—C16 | −0.8 (4) | C31—C32—C33—C34 | −1.2 (5) |
C14—C15—C16—C17 | 1.0 (4) | C32—C33—C34—C35 | 0.6 (6) |
C15—C16—C17—C18 | −0.5 (4) | C33—C34—C35—C36 | 0.3 (6) |
C14—C13—C18—C17 | 0.4 (4) | C34—C35—C36—C31 | −0.5 (5) |
C8—C13—C18—C17 | 176.8 (2) | C32—C31—C36—C35 | −0.1 (4) |
C16—C17—C18—C13 | −0.2 (4) | C26—C31—C36—C35 | −179.0 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—HN1···O2i | 0.86 | 2.17 | 2.861 (2) | 137 |
N4—HN4···O1ii | 0.86 | 2.41 | 2.939 (2) | 121 |
Symmetry codes: (i) x+1, y+1, z; (ii) x−1, y−1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—HN1···O2i | 0.86 | 2.17 | 2.861 (2) | 137 |
N4—HN4···O1ii | 0.86 | 2.41 | 2.939 (2) | 121 |
Symmetry codes: (i) x+1, y+1, z; (ii) x−1, y−1, z. |
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The benzodiazepine nucleus is a pharmacophoric scaffold and represents a class of heterocycles with a wide range of applications. In particular, several representative benzodiazepines possess significant biological activity as antiviral (Di Braccio et al., 2001), antipsychotic agents (Kavita et al., 1988) and may be considered support for the synthesis of more active heterocyclic systems. Research in this area is highly active being directed towards the synthesis of compounds with enhanced pharmacological activity. Following the research efforts from some of us concerning novel synthetic pathways of new benzodiazepines (Loughzail et al., 2014).
The reaction of N,N-dimethylformamide dimethylacetal (DMF-DMA) in 4-phenyl-1H-1,5-benzodiazepin-2(3H)-one (Nardi et al., 1973) at reflux leads to the formation of the title compound, (E)-3-[(dimethylamino)methylene]-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one with a good yield of 75%. The main geometric feature determined by X-ray diffraction is in good agreement with that observed in a similar compound (Loughzail et al., 2014).