organic compounds
1-Benzyl-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one
aLaboratoire de Chimie Organique Hétérocyclique, URAC 21, Pôle de Compétence Pharmacochimie, Av Ibn Battouta, BP 1014, Faculté des Sciences, Université Mohammed V, Rabat, Morocco, and bDepartment of Chemistry, Tulane University, New Orleans, LA 70118, USA
*Correspondence e-mail: essaghouani.hanine@gmail.com
In the title molecule, C22H18N2O, the seven-membered ring adopts a boat conformation with the planes of the pendant phenyl rings nearly perpendicular to the plane of the aromatic portion of the benzodiazepine core. Pairwise C—H⋯π(ring) interactions form inversion dimers which pack in zigzag layers associated through weak C—H⋯O hydrogen bonds.
Keywords: crystal structure; benzodiazepine; hydrogen bond.
CCDC reference: 1522632
Structure description
Benzodiazepines have attracted attention as an important class of et al., 2004) and hypnotic agents (Zellou et al., 1998). The present work is a continuation of our work on 1,5-benzodiazepin-2-one derivatives (Ballo et al., 2010).
in the field of drugs and pharmaceuticals. These compounds are widely used as anti-anxiety agents (KusanurIn the title compound (Fig. 1), the dihedral angle between the mean planes of the C10–C15 and C1–C6 rings is 83.82 (6)° while that between the mean planes of the C1–C6 and C17–C22 rings is 87.32 (6)°. A of the seven-membered ring yielded the puckering parameters Q(2) = 0.879 (1) Å, Q(3) = 0.219 (1) Å, φ(2) = 207.53 (8)° and φ(3) = 307.8 (3)°, which indicates a boat conformation.
In the crystal, the molecules form inversion dimers through pairwise C4—H4⋯π interactions (Table 1 and Fig. 2). These dimers pack in zigzag layers which are associated through weak C14—H14⋯O1ii hydrogen bonds (Table 1 and Figs. 2 and 3).
Synthesis and crystallization
To a solution of 4-phenyl-1,5-benzodiazepin-2-one (2.36 g, 10 mmol) in DMF (40 ml) was added benzyl chloride (2.3 ml, 20 mmol), potassium carbonate (2.77 g, 20 mmol) and a catalytic quantity of tetra-n-butylammonium bromide. The mixture was stirred at room temperature for 24 h. The solution was filtered and the solvent removed under reduced pressure. The residue was recrystallized from ethanol solution to afford the title compound as colourless crystals (yield: 68%).
Refinement
Crystal data, data collection and structure .
details are summarized in Table 2Structural data
CCDC reference: 1522632
https://doi.org/10.1107/S241431461601988X/vm4019sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S241431461601988X/vm4019Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S241431461601988X/vm4019Isup3.cdx
Supporting information file. DOI: https://doi.org/10.1107/S241431461601988X/vm4019Isup4.cml
Data collection: APEX3 (Bruker, 2016); cell
SAINT (Bruker, 2016); data reduction: SAINT (Bruker, 2016); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015b); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C22H18N2O | F(000) = 688 |
Mr = 326.38 | Dx = 1.258 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 14.6973 (7) Å | Cell parameters from 9683 reflections |
b = 5.9179 (3) Å | θ = 2.4–27.5° |
c = 19.8537 (9) Å | µ = 0.08 mm−1 |
β = 93.461 (1)° | T = 296 K |
V = 1723.67 (14) Å3 | Block, colourless |
Z = 4 | 0.43 × 0.30 × 0.22 mm |
Bruker SMART APEX CCD diffractometer | 4261 independent reflections |
Radiation source: fine-focus sealed tube | 3110 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.035 |
Detector resolution: 8.3333 pixels mm-1 | θmax = 28.3°, θmin = 2.1° |
φ and ω scans | h = −19→19 |
Absorption correction: multi-scan (SADABS; Bruker, 2016) | k = −7→7 |
Tmin = 0.87, Tmax = 0.98 | l = −26→25 |
30265 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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.139 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0823P)2 + 0.065P] where P = (Fo2 + 2Fc2)/3 |
4261 reflections | (Δ/σ)max = 0.001 |
226 parameters | Δρmax = 0.21 e Å−3 |
0 restraints | Δρmin = −0.15 e Å−3 |
Experimental. The diffraction data were obtained from 3 sets of 400 frames, each of width 0.5° in ω, collected at φ = 0.00, 90.00 and 180.00° and 2 sets of 800 frames, each of width 0.45° in φ, collected at ω = –30.00 and 210.00°. The scan time was 15 sec/frame. |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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. H-atoms attached to carbon were placed in calculated positions (C—H = 0.95 - 0.99 Å). All were included as riding contributions with isotropic displacement parameters 1.2 - 1.5 times those of the attached atoms. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.24295 (7) | 0.5688 (2) | 0.31026 (6) | 0.0954 (4) | |
N1 | 0.40947 (6) | 0.15215 (15) | 0.42752 (5) | 0.0473 (2) | |
N2 | 0.22089 (6) | 0.26574 (17) | 0.37616 (4) | 0.0514 (3) | |
C1 | 0.24093 (7) | 0.13976 (19) | 0.43604 (5) | 0.0458 (3) | |
C2 | 0.16861 (8) | 0.0487 (2) | 0.46964 (6) | 0.0577 (3) | |
H2 | 0.1091 | 0.0767 | 0.4532 | 0.069* | |
C3 | 0.18363 (10) | −0.0813 (2) | 0.52644 (7) | 0.0663 (4) | |
H3 | 0.1346 | −0.1407 | 0.5481 | 0.080* | |
C4 | 0.27189 (10) | −0.1238 (3) | 0.55135 (7) | 0.0663 (4) | |
H4 | 0.2823 | −0.2090 | 0.5904 | 0.080* | |
C5 | 0.34419 (9) | −0.0404 (2) | 0.51839 (6) | 0.0565 (3) | |
H5 | 0.4033 | −0.0731 | 0.5349 | 0.068* | |
C6 | 0.33060 (7) | 0.09273 (18) | 0.46054 (5) | 0.0449 (3) | |
C7 | 0.41683 (7) | 0.35018 (18) | 0.40285 (6) | 0.0459 (3) | |
C8 | 0.34347 (8) | 0.5261 (2) | 0.40845 (7) | 0.0596 (3) | |
H8A | 0.3241 | 0.5320 | 0.4543 | 0.071* | |
H8B | 0.3663 | 0.6739 | 0.3968 | 0.071* | |
C9 | 0.26510 (8) | 0.4603 (2) | 0.36051 (7) | 0.0602 (3) | |
C10 | 0.49709 (7) | 0.40460 (19) | 0.36411 (6) | 0.0466 (3) | |
C11 | 0.53994 (8) | 0.6133 (2) | 0.36959 (7) | 0.0624 (3) | |
H11 | 0.5181 | 0.7232 | 0.3980 | 0.075* | |
C12 | 0.61486 (9) | 0.6586 (2) | 0.33306 (8) | 0.0720 (4) | |
H12 | 0.6442 | 0.7974 | 0.3379 | 0.086* | |
C13 | 0.64630 (8) | 0.5000 (3) | 0.28976 (7) | 0.0673 (4) | |
H13 | 0.6957 | 0.5331 | 0.2643 | 0.081* | |
C14 | 0.60475 (8) | 0.2924 (3) | 0.28393 (6) | 0.0627 (3) | |
H14 | 0.6264 | 0.1845 | 0.2548 | 0.075* | |
C15 | 0.53077 (7) | 0.2438 (2) | 0.32134 (6) | 0.0522 (3) | |
H15 | 0.5034 | 0.1022 | 0.3178 | 0.063* | |
C16 | 0.14258 (8) | 0.1991 (3) | 0.33137 (6) | 0.0593 (3) | |
H16A | 0.1336 | 0.0375 | 0.3358 | 0.071* | |
H16B | 0.1571 | 0.2284 | 0.2852 | 0.071* | |
C17 | 0.05352 (7) | 0.3175 (2) | 0.34414 (5) | 0.0513 (3) | |
C18 | 0.04870 (9) | 0.5022 (2) | 0.38589 (7) | 0.0662 (4) | |
H18 | 0.1013 | 0.5564 | 0.4088 | 0.079* | |
C19 | −0.03416 (9) | 0.6081 (3) | 0.39392 (8) | 0.0759 (4) | |
H19 | −0.0369 | 0.7328 | 0.4223 | 0.091* | |
C20 | −0.11235 (9) | 0.5294 (3) | 0.36009 (8) | 0.0704 (4) | |
H20 | −0.1677 | 0.6016 | 0.3651 | 0.084* | |
C21 | −0.10814 (8) | 0.3448 (3) | 0.31912 (7) | 0.0668 (4) | |
H21 | −0.1609 | 0.2900 | 0.2966 | 0.080* | |
C22 | −0.02581 (8) | 0.2394 (2) | 0.31100 (6) | 0.0595 (3) | |
H22 | −0.0236 | 0.1141 | 0.2829 | 0.071* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0594 (6) | 0.1204 (9) | 0.1077 (8) | 0.0146 (6) | 0.0168 (5) | 0.0682 (8) |
N1 | 0.0425 (5) | 0.0469 (5) | 0.0521 (5) | 0.0025 (4) | −0.0001 (4) | −0.0024 (4) |
N2 | 0.0423 (5) | 0.0628 (6) | 0.0491 (5) | 0.0057 (4) | 0.0040 (4) | 0.0092 (4) |
C1 | 0.0478 (6) | 0.0463 (6) | 0.0433 (6) | 0.0023 (4) | 0.0036 (4) | −0.0003 (4) |
C2 | 0.0487 (6) | 0.0674 (8) | 0.0574 (7) | −0.0014 (5) | 0.0064 (5) | 0.0068 (6) |
C3 | 0.0657 (8) | 0.0745 (9) | 0.0599 (8) | −0.0073 (7) | 0.0126 (6) | 0.0125 (7) |
C4 | 0.0775 (9) | 0.0708 (9) | 0.0499 (7) | −0.0024 (7) | −0.0010 (6) | 0.0141 (6) |
C5 | 0.0583 (7) | 0.0589 (7) | 0.0510 (6) | 0.0010 (5) | −0.0066 (5) | 0.0023 (5) |
C6 | 0.0467 (6) | 0.0418 (5) | 0.0458 (6) | 0.0002 (4) | 0.0011 (4) | −0.0044 (5) |
C7 | 0.0418 (5) | 0.0434 (6) | 0.0524 (6) | 0.0024 (4) | 0.0010 (4) | −0.0064 (5) |
C8 | 0.0548 (7) | 0.0426 (6) | 0.0835 (9) | 0.0056 (5) | 0.0222 (6) | −0.0005 (6) |
C9 | 0.0434 (6) | 0.0668 (8) | 0.0720 (8) | 0.0152 (5) | 0.0177 (5) | 0.0207 (7) |
C10 | 0.0374 (5) | 0.0482 (6) | 0.0539 (6) | 0.0029 (4) | −0.0006 (4) | −0.0008 (5) |
C11 | 0.0507 (7) | 0.0514 (7) | 0.0857 (9) | −0.0045 (5) | 0.0089 (6) | −0.0081 (6) |
C12 | 0.0495 (7) | 0.0635 (8) | 0.1033 (11) | −0.0066 (6) | 0.0073 (7) | 0.0098 (8) |
C13 | 0.0400 (6) | 0.0891 (10) | 0.0731 (8) | 0.0042 (6) | 0.0065 (5) | 0.0194 (8) |
C14 | 0.0490 (6) | 0.0831 (9) | 0.0564 (7) | 0.0137 (6) | 0.0056 (5) | −0.0032 (6) |
C15 | 0.0456 (6) | 0.0552 (7) | 0.0554 (6) | 0.0037 (5) | −0.0007 (5) | −0.0048 (5) |
C16 | 0.0504 (6) | 0.0810 (9) | 0.0461 (6) | 0.0112 (6) | 0.0013 (5) | −0.0011 (6) |
C17 | 0.0446 (6) | 0.0645 (7) | 0.0447 (6) | 0.0044 (5) | 0.0023 (4) | 0.0066 (5) |
C18 | 0.0435 (6) | 0.0796 (9) | 0.0752 (8) | 0.0022 (6) | 0.0003 (6) | −0.0129 (7) |
C19 | 0.0575 (8) | 0.0770 (9) | 0.0942 (11) | 0.0082 (7) | 0.0112 (7) | −0.0135 (8) |
C20 | 0.0439 (6) | 0.0825 (10) | 0.0852 (10) | 0.0103 (6) | 0.0087 (6) | 0.0155 (8) |
C21 | 0.0440 (6) | 0.0875 (10) | 0.0680 (8) | −0.0048 (6) | −0.0034 (5) | 0.0127 (7) |
C22 | 0.0543 (7) | 0.0705 (8) | 0.0531 (7) | −0.0039 (6) | −0.0012 (5) | 0.0025 (6) |
O1—C9 | 1.2139 (15) | C11—C12 | 1.3808 (18) |
N1—C7 | 1.2773 (14) | C11—H11 | 0.9300 |
N1—C6 | 1.4103 (13) | C12—C13 | 1.372 (2) |
N2—C9 | 1.3672 (16) | C12—H12 | 0.9300 |
N2—C1 | 1.4190 (14) | C13—C14 | 1.374 (2) |
N2—C16 | 1.4653 (15) | C13—H13 | 0.9300 |
C1—C2 | 1.3969 (16) | C14—C15 | 1.3836 (17) |
C1—C6 | 1.4048 (15) | C14—H14 | 0.9300 |
C2—C3 | 1.3719 (18) | C15—H15 | 0.9300 |
C2—H2 | 0.9300 | C16—C17 | 1.5193 (16) |
C3—C4 | 1.383 (2) | C16—H16A | 0.9700 |
C3—H3 | 0.9300 | C16—H16B | 0.9700 |
C4—C5 | 1.3731 (19) | C17—C18 | 1.3766 (18) |
C4—H4 | 0.9300 | C17—C22 | 1.3832 (17) |
C5—C6 | 1.3971 (16) | C18—C19 | 1.3873 (18) |
C5—H5 | 0.9300 | C18—H18 | 0.9300 |
C7—C10 | 1.4820 (15) | C19—C20 | 1.377 (2) |
C7—C8 | 1.5078 (15) | C19—H19 | 0.9300 |
C8—C9 | 1.5007 (19) | C20—C21 | 1.366 (2) |
C8—H8A | 0.9700 | C20—H20 | 0.9300 |
C8—H8B | 0.9700 | C21—C22 | 1.3795 (18) |
C10—C15 | 1.3865 (15) | C21—H21 | 0.9300 |
C10—C11 | 1.3879 (17) | C22—H22 | 0.9300 |
C7—N1—C6 | 119.87 (9) | C12—C11—H11 | 119.9 |
C9—N2—C1 | 123.75 (10) | C10—C11—H11 | 119.9 |
C9—N2—C16 | 117.08 (10) | C13—C12—C11 | 120.40 (13) |
C1—N2—C16 | 118.87 (10) | C13—C12—H12 | 119.8 |
C2—C1—C6 | 118.89 (10) | C11—C12—H12 | 119.8 |
C2—C1—N2 | 118.52 (10) | C12—C13—C14 | 119.99 (12) |
C6—C1—N2 | 122.49 (10) | C12—C13—H13 | 120.0 |
C3—C2—C1 | 121.31 (12) | C14—C13—H13 | 120.0 |
C3—C2—H2 | 119.3 | C13—C14—C15 | 120.03 (12) |
C1—C2—H2 | 119.3 | C13—C14—H14 | 120.0 |
C2—C3—C4 | 119.79 (12) | C15—C14—H14 | 120.0 |
C2—C3—H3 | 120.1 | C14—C15—C10 | 120.48 (12) |
C4—C3—H3 | 120.1 | C14—C15—H15 | 119.8 |
C5—C4—C3 | 120.02 (12) | C10—C15—H15 | 119.8 |
C5—C4—H4 | 120.0 | N2—C16—C17 | 115.33 (10) |
C3—C4—H4 | 120.0 | N2—C16—H16A | 108.4 |
C4—C5—C6 | 121.21 (11) | C17—C16—H16A | 108.4 |
C4—C5—H5 | 119.4 | N2—C16—H16B | 108.4 |
C6—C5—H5 | 119.4 | C17—C16—H16B | 108.4 |
C5—C6—C1 | 118.75 (10) | H16A—C16—H16B | 107.5 |
C5—C6—N1 | 116.23 (9) | C18—C17—C22 | 118.64 (11) |
C1—C6—N1 | 124.74 (10) | C18—C17—C16 | 122.87 (11) |
N1—C7—C10 | 119.13 (9) | C22—C17—C16 | 118.47 (11) |
N1—C7—C8 | 121.86 (10) | C17—C18—C19 | 120.36 (12) |
C10—C7—C8 | 118.90 (10) | C17—C18—H18 | 119.8 |
C9—C8—C7 | 107.40 (10) | C19—C18—H18 | 119.8 |
C9—C8—H8A | 110.2 | C20—C19—C18 | 120.24 (14) |
C7—C8—H8A | 110.2 | C20—C19—H19 | 119.9 |
C9—C8—H8B | 110.2 | C18—C19—H19 | 119.9 |
C7—C8—H8B | 110.2 | C21—C20—C19 | 119.65 (12) |
H8A—C8—H8B | 108.5 | C21—C20—H20 | 120.2 |
O1—C9—N2 | 121.64 (14) | C19—C20—H20 | 120.2 |
O1—C9—C8 | 122.78 (13) | C20—C21—C22 | 120.21 (12) |
N2—C9—C8 | 115.56 (10) | C20—C21—H21 | 119.9 |
C15—C10—C11 | 118.80 (11) | C22—C21—H21 | 119.9 |
C15—C10—C7 | 119.57 (10) | C21—C22—C17 | 120.89 (13) |
C11—C10—C7 | 121.63 (10) | C21—C22—H22 | 119.6 |
C12—C11—C10 | 120.27 (13) | C17—C22—H22 | 119.6 |
C9—N2—C1—C2 | 139.33 (12) | C7—C8—C9—N2 | 66.58 (13) |
C16—N2—C1—C2 | −34.13 (15) | N1—C7—C10—C15 | 38.62 (15) |
C9—N2—C1—C6 | −44.34 (16) | C8—C7—C10—C15 | −137.79 (12) |
C16—N2—C1—C6 | 142.19 (11) | N1—C7—C10—C11 | −141.23 (12) |
C6—C1—C2—C3 | 1.24 (19) | C8—C7—C10—C11 | 42.37 (16) |
N2—C1—C2—C3 | 177.70 (12) | C15—C10—C11—C12 | −0.15 (19) |
C1—C2—C3—C4 | 0.1 (2) | C7—C10—C11—C12 | 179.70 (11) |
C2—C3—C4—C5 | −1.5 (2) | C10—C11—C12—C13 | 1.6 (2) |
C3—C4—C5—C6 | 1.6 (2) | C11—C12—C13—C14 | −1.8 (2) |
C4—C5—C6—C1 | −0.32 (18) | C12—C13—C14—C15 | 0.5 (2) |
C4—C5—C6—N1 | −174.53 (12) | C13—C14—C15—C10 | 1.00 (18) |
C2—C1—C6—C5 | −1.09 (17) | C11—C10—C15—C14 | −1.16 (17) |
N2—C1—C6—C5 | −177.40 (10) | C7—C10—C15—C14 | 178.99 (10) |
C2—C1—C6—N1 | 172.58 (11) | C9—N2—C16—C17 | −81.50 (13) |
N2—C1—C6—N1 | −3.73 (17) | C1—N2—C16—C17 | 92.40 (13) |
C7—N1—C6—C5 | −140.63 (11) | N2—C16—C17—C18 | 11.36 (18) |
C7—N1—C6—C1 | 45.55 (15) | N2—C16—C17—C22 | −170.31 (11) |
C6—N1—C7—C10 | −175.68 (9) | C22—C17—C18—C19 | −0.5 (2) |
C6—N1—C7—C8 | 0.61 (16) | C16—C17—C18—C19 | 177.85 (13) |
N1—C7—C8—C9 | −73.35 (14) | C17—C18—C19—C20 | −0.1 (2) |
C10—C7—C8—C9 | 102.95 (11) | C18—C19—C20—C21 | 0.7 (2) |
C1—N2—C9—O1 | −176.47 (11) | C19—C20—C21—C22 | −0.8 (2) |
C16—N2—C9—O1 | −2.89 (17) | C20—C21—C22—C17 | 0.2 (2) |
C1—N2—C9—C8 | 4.97 (16) | C18—C17—C22—C21 | 0.41 (19) |
C16—N2—C9—C8 | 178.55 (9) | C16—C17—C22—C21 | −177.99 (12) |
C7—C8—C9—O1 | −111.96 (14) |
Cg1 is the centroid of the C10–C15 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14···O1i | 0.93 | 2.47 | 3.2808 (17) | 145 |
C4—H4···Cg1ii | 0.93 | 2.98 | 3.767 (2) | 143 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) −x+1, −y, −z+1. |
Acknowledgements
JTM thanks Tulane University for support of the Tulane Crystallography Laboratory.
References
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