Abstract
In the title compound, C18H18N2O, the morpholine ring adopts a chair conformation with the exocyclic N—C bond in an equatorial orientation. The dihedral angles between the central benzene ring and the morpholine ring (all atoms) and the cyanobenzene ring are 87.87 (7) and 52.54 (7)°, respectively. No significant intermolecular interactions are observed in the crystal structure.
Related literature
For biological applications of biphenyl derivatives see; Li et al. (2011 ▶); Hadizad et al. (2009 ▶); Larsen et al. (1994 ▶); Kamble et al. (2011 ▶); Zhang et al. (2004 ▶); Chan et al. (1994 ▶).
Experimental
Crystal data
C18H18N2O
M r = 278.34
Monoclinic,
a = 21.1079 (5) Å
b = 8.1358 (1) Å
c = 9.0793 (2) Å
β = 100.833 (1)°
V = 1531.40 (5) Å3
Z = 4
Mo Kα radiation
μ = 0.08 mm−1
T = 296 K
0.24 × 0.20 × 0.12 mm
Data collection
Bruker SMART CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 2007 ▶) T min = 0.770, T max = 1.000
10319 measured reflections
2387 independent reflections
1948 reflections with I > 2σ(I)
R int = 0.021
Refinement
R[F 2 > 2σ(F 2)] = 0.033
wR(F 2) = 0.083
S = 1.03
2387 reflections
191 parameters
H-atom parameters constrained
Δρmax = 0.11 e Å−3
Δρmin = −0.10 e Å−3
Data collection: SMART (Bruker, 2001 ▶); cell refinement: SAINT (Bruker, 2001 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 (Farrugia, 2012 ▶); software used to prepare material for publication: SHELXL97.
Supplementary Material
Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812050957/hb7014sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812050957/hb7014Isup2.hkl
Supplementary material file. DOI: 10.1107/S1600536812050957/hb7014Isup3.cml
Additional supplementary materials: crystallographic information; 3D view; checkCIF report
Acknowledgments
The authors thank the Universities Sophisticated Instrumental Centre, Karnatak University, Dharwad, for the data collection. The authors are also grateful to University Grants Commission, New Delhi for financial assistance [letter No. 37-248/2009 (SR)].
supplementary crystallographic information
Comment
Biphenyl derivatives were reported as non-peptide AII antagonists by the discovery at Du-pont Merck which resulted into clinical candidate (5–2-[(4-methyl)-biphenyl]-1H-tetrazole. This has become the common motif for most of the potent antagonists reported (Li et al., 2011; Hadizad et al., 2009; Larsen et al., 1994). This discovery lead to the development of drugs such as irbesartan and losartan for the efficient treatment of hypertension. Since then these biphenyl derivatives have received enormous focus due to their inhibition of angiotensin converting enzyme (ACE) and in this regard many biphenyl derivatives have been reported (Kamble et al., 2011; Zhang et al., 2004; Chan et al., 1994).
The asymmetric unit of 4'-(morpholin-4-ylmethyl)biphenyl-2-carbonitrile is shown in Fig. 1. The the morpholine ring (O1/N2/C4–C7)adopts a chair conformation. The dihedral angle between the morpholine ring (O1/N2/C4–C7) and the benzene rings (C9–C14) and (C15–C20) are 87.87 (7)° and 44.76 (7)° respectively. No significant intermolecular interactions are observed. The crystal packing of the molecules is shown in Fig.2.
Experimental
A mixture of 4'-(bromomethyl)-biphenyl-2-carbonitrile (0.0074 mol), morpholine (0.0085 mol) in presence of potassium carbonate (0.009 mol) in acetone (20 ml) was stirred at 298–300 K for 5–6hrs, filtred the salt, filtrate added to 50 ml water stirred well to get solid, filtered and washed with water, dried at 313 K. Colourless plates were recrystallized from a solvent mixture of acetone and THF (m.p. 348 K).
Refinement
All H atoms were positioned geometrically, with C—H = 0.93 Å for aromatic H and C—H = 0.97 Å for methylene H and refined using a riding model with Uiso(H) = 1.2Ueq(C) for aromatic and methylene H.
Figures
Fig. 1.

The molecular structure of the title compound. Displacement ellipsoids are drawn at the 50% probability level. Hydrogen atoms are shown as spheres of arbitrary radius.
Fig. 2.
The packing of molecules.
Crystal data
| C18H18N2O | F(000) = 592 |
| Mr = 278.34 | Dx = 1.207 Mg m−3 |
| Monoclinic, P21/c | Melting point: 348 K |
| Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
| a = 21.1079 (5) Å | Cell parameters from 2387 reflections |
| b = 8.1358 (1) Å | θ = 2.7–24.1° |
| c = 9.0793 (2) Å | µ = 0.08 mm−1 |
| β = 100.833 (1)° | T = 296 K |
| V = 1531.40 (5) Å3 | Plate, colourless |
| Z = 4 | 0.24 × 0.20 × 0.12 mm |
Data collection
| Bruker SMART CCD diffractometer | 2387 independent reflections |
| Radiation source: fine-focus sealed tube | 1948 reflections with I > 2σ(I) |
| Graphite monochromator | Rint = 0.021 |
| ω and φ scans | θmax = 24.1°, θmin = 2.7° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 2007) | h = −18→24 |
| Tmin = 0.770, Tmax = 1.000 | k = −9→9 |
| 10319 measured reflections | l = −10→10 |
Refinement
| 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)] = 0.033 | H-atom parameters constrained |
| wR(F2) = 0.083 | w = 1/[σ2(Fo2) + (0.0398P)2 + 0.1412P] where P = (Fo2 + 2Fc2)/3 |
| S = 1.03 | (Δ/σ)max < 0.001 |
| 2387 reflections | Δρmax = 0.11 e Å−3 |
| 191 parameters | Δρmin = −0.10 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: 0.0110 (13) |
Special details
| Experimental. Spectroscopic data IR (KBr): 3040–3080, 2175, 1500, 1H NMR (300 MHz, CDCl3, δ p.p.m..): 2.93 (t,4H, Morpholine CH2), 3.8 (s, 2H, CH2), 3.94 (t, 4H, morpholine CH2), 7.42- 7.84 (m, 8H, ArH). MS (m/z, 70 eV): 278, 250, 192. |
| Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2)
| x | y | z | Uiso*/Ueq | ||
| O1 | 0.05263 (6) | 0.66354 (15) | 0.88307 (13) | 0.0926 (4) | |
| N2 | 0.11430 (4) | 0.39688 (12) | 0.76422 (10) | 0.0462 (3) | |
| N3 | 0.42812 (7) | 0.18166 (17) | 1.11979 (17) | 0.0859 (4) | |
| C4 | 0.10594 (8) | 0.5807 (2) | 0.96979 (18) | 0.0835 (5) | |
| H4A | 0.0904 | 0.4927 | 1.0258 | 0.100* | |
| H4B | 0.1302 | 0.6568 | 1.0412 | 0.100* | |
| C5 | 0.14930 (6) | 0.51072 (17) | 0.87289 (15) | 0.0584 (4) | |
| H5A | 0.1667 | 0.5991 | 0.8209 | 0.070* | |
| H5B | 0.1851 | 0.4541 | 0.9351 | 0.070* | |
| C6 | 0.05896 (6) | 0.48231 (17) | 0.67698 (15) | 0.0585 (4) | |
| H6A | 0.0337 | 0.4060 | 0.6075 | 0.070* | |
| H6B | 0.0739 | 0.5695 | 0.6191 | 0.070* | |
| C7 | 0.01763 (7) | 0.5536 (2) | 0.7778 (2) | 0.0789 (5) | |
| H7A | −0.0185 | 0.6112 | 0.7178 | 0.095* | |
| H7B | 0.0005 | 0.4654 | 0.8306 | 0.095* | |
| C8 | 0.15600 (7) | 0.33485 (18) | 0.66566 (14) | 0.0583 (4) | |
| H8A | 0.1782 | 0.4270 | 0.6304 | 0.070* | |
| H8B | 0.1293 | 0.2843 | 0.5788 | 0.070* | |
| C9 | 0.20548 (6) | 0.21152 (16) | 0.73752 (13) | 0.0504 (3) | |
| C10 | 0.18769 (6) | 0.07434 (16) | 0.81104 (13) | 0.0523 (3) | |
| H10 | 0.1448 | 0.0608 | 0.8197 | 0.063* | |
| C11 | 0.23247 (6) | −0.04191 (16) | 0.87128 (13) | 0.0507 (3) | |
| H11 | 0.2193 | −0.1331 | 0.9194 | 0.061* | |
| C12 | 0.29698 (6) | −0.02548 (15) | 0.86153 (14) | 0.0491 (3) | |
| C13 | 0.31476 (6) | 0.11113 (16) | 0.78798 (15) | 0.0582 (4) | |
| H13 | 0.3577 | 0.1251 | 0.7798 | 0.070* | |
| C14 | 0.26966 (6) | 0.22674 (17) | 0.72675 (15) | 0.0585 (4) | |
| H14 | 0.2827 | 0.3170 | 0.6771 | 0.070* | |
| C15 | 0.34412 (6) | −0.15362 (15) | 0.92802 (15) | 0.0527 (3) | |
| C16 | 0.40058 (6) | −0.11543 (16) | 1.02980 (16) | 0.0566 (4) | |
| C17 | 0.44281 (7) | −0.23758 (18) | 1.09399 (18) | 0.0706 (4) | |
| H17 | 0.4801 | −0.2099 | 1.1615 | 0.085* | |
| C18 | 0.42949 (8) | −0.39895 (19) | 1.0579 (2) | 0.0776 (5) | |
| H18 | 0.4578 | −0.4810 | 1.1006 | 0.093* | |
| C19 | 0.37458 (8) | −0.43904 (18) | 0.9591 (2) | 0.0789 (5) | |
| H19 | 0.3655 | −0.5487 | 0.9351 | 0.095* | |
| C20 | 0.33248 (7) | −0.31866 (17) | 0.89470 (18) | 0.0687 (4) | |
| H20 | 0.2954 | −0.3486 | 0.8274 | 0.082* | |
| C21 | 0.41517 (6) | 0.05194 (18) | 1.07696 (17) | 0.0633 (4) |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| O1 | 0.0948 (8) | 0.0848 (8) | 0.0920 (8) | 0.0435 (7) | 0.0019 (7) | −0.0129 (6) |
| N2 | 0.0412 (6) | 0.0469 (6) | 0.0480 (6) | 0.0037 (4) | 0.0018 (4) | 0.0029 (4) |
| N3 | 0.0726 (9) | 0.0598 (9) | 0.1148 (11) | −0.0027 (7) | −0.0098 (8) | −0.0077 (8) |
| C4 | 0.0912 (12) | 0.0866 (11) | 0.0668 (9) | 0.0383 (9) | −0.0004 (9) | −0.0144 (9) |
| C5 | 0.0537 (8) | 0.0582 (8) | 0.0572 (8) | 0.0045 (6) | −0.0051 (6) | −0.0016 (6) |
| C6 | 0.0477 (7) | 0.0567 (8) | 0.0651 (8) | 0.0028 (6) | −0.0051 (6) | 0.0076 (7) |
| C7 | 0.0517 (9) | 0.0840 (12) | 0.0987 (12) | 0.0207 (8) | 0.0079 (8) | 0.0104 (10) |
| C8 | 0.0629 (8) | 0.0654 (9) | 0.0447 (7) | 0.0125 (7) | 0.0054 (6) | 0.0041 (6) |
| C9 | 0.0529 (8) | 0.0578 (8) | 0.0394 (6) | 0.0078 (6) | 0.0062 (5) | −0.0035 (6) |
| C10 | 0.0434 (7) | 0.0646 (8) | 0.0488 (7) | 0.0043 (6) | 0.0081 (6) | −0.0036 (6) |
| C11 | 0.0491 (7) | 0.0507 (7) | 0.0525 (7) | −0.0014 (6) | 0.0101 (6) | −0.0021 (6) |
| C12 | 0.0475 (7) | 0.0463 (7) | 0.0529 (7) | 0.0029 (6) | 0.0079 (6) | −0.0050 (6) |
| C13 | 0.0453 (7) | 0.0593 (8) | 0.0710 (8) | 0.0027 (6) | 0.0137 (6) | 0.0035 (7) |
| C14 | 0.0578 (9) | 0.0567 (8) | 0.0618 (8) | 0.0030 (7) | 0.0132 (7) | 0.0087 (7) |
| C15 | 0.0488 (7) | 0.0467 (7) | 0.0638 (8) | 0.0037 (6) | 0.0139 (6) | −0.0009 (6) |
| C16 | 0.0466 (8) | 0.0482 (8) | 0.0746 (9) | 0.0051 (6) | 0.0106 (7) | 0.0021 (7) |
| C17 | 0.0530 (8) | 0.0618 (9) | 0.0932 (11) | 0.0106 (7) | 0.0044 (8) | 0.0069 (8) |
| C18 | 0.0693 (10) | 0.0554 (9) | 0.1073 (12) | 0.0191 (8) | 0.0140 (9) | 0.0113 (9) |
| C19 | 0.0840 (11) | 0.0446 (8) | 0.1079 (12) | 0.0080 (8) | 0.0171 (10) | −0.0030 (8) |
| C20 | 0.0637 (9) | 0.0522 (9) | 0.0874 (10) | 0.0010 (7) | 0.0070 (8) | −0.0079 (8) |
| C21 | 0.0458 (8) | 0.0573 (9) | 0.0821 (10) | 0.0039 (7) | −0.0003 (7) | 0.0027 (8) |
Geometric parameters (Å, º)
| O1—C7 | 1.4120 (19) | C10—C11 | 1.3758 (17) |
| O1—C4 | 1.4169 (18) | C10—H10 | 0.9300 |
| N2—C5 | 1.4502 (16) | C11—C12 | 1.3873 (17) |
| N2—C8 | 1.4581 (16) | C11—H11 | 0.9300 |
| N2—C6 | 1.4585 (15) | C12—C13 | 1.3843 (18) |
| N3—C21 | 1.1401 (18) | C12—C15 | 1.4886 (18) |
| C4—C5 | 1.496 (2) | C13—C14 | 1.3788 (18) |
| C4—H4A | 0.9700 | C13—H13 | 0.9300 |
| C4—H4B | 0.9700 | C14—H14 | 0.9300 |
| C5—H5A | 0.9700 | C15—C20 | 1.3881 (19) |
| C5—H5B | 0.9700 | C15—C16 | 1.3989 (18) |
| C6—C7 | 1.495 (2) | C16—C17 | 1.3880 (18) |
| C6—H6A | 0.9700 | C16—C21 | 1.443 (2) |
| C6—H6B | 0.9700 | C17—C18 | 1.369 (2) |
| C7—H7A | 0.9700 | C17—H17 | 0.9300 |
| C7—H7B | 0.9700 | C18—C19 | 1.365 (2) |
| C8—C9 | 1.5057 (17) | C18—H18 | 0.9300 |
| C8—H8A | 0.9700 | C19—C20 | 1.377 (2) |
| C8—H8B | 0.9700 | C19—H19 | 0.9300 |
| C9—C14 | 1.3819 (18) | C20—H20 | 0.9300 |
| C9—C10 | 1.3879 (18) | ||
| C7—O1—C4 | 109.55 (11) | C10—C9—C8 | 121.06 (12) |
| C5—N2—C8 | 110.46 (10) | C11—C10—C9 | 121.07 (12) |
| C5—N2—C6 | 108.59 (10) | C11—C10—H10 | 119.5 |
| C8—N2—C6 | 110.24 (9) | C9—C10—H10 | 119.5 |
| O1—C4—C5 | 111.35 (12) | C10—C11—C12 | 121.17 (12) |
| O1—C4—H4A | 109.4 | C10—C11—H11 | 119.4 |
| C5—C4—H4A | 109.4 | C12—C11—H11 | 119.4 |
| O1—C4—H4B | 109.4 | C13—C12—C11 | 117.81 (12) |
| C5—C4—H4B | 109.4 | C13—C12—C15 | 122.46 (11) |
| H4A—C4—H4B | 108.0 | C11—C12—C15 | 119.73 (11) |
| N2—C5—C4 | 110.69 (12) | C14—C13—C12 | 120.86 (12) |
| N2—C5—H5A | 109.5 | C14—C13—H13 | 119.6 |
| C4—C5—H5A | 109.5 | C12—C13—H13 | 119.6 |
| N2—C5—H5B | 109.5 | C13—C14—C9 | 121.47 (13) |
| C4—C5—H5B | 109.5 | C13—C14—H14 | 119.3 |
| H5A—C5—H5B | 108.1 | C9—C14—H14 | 119.3 |
| N2—C6—C7 | 110.63 (11) | C20—C15—C16 | 116.92 (12) |
| N2—C6—H6A | 109.5 | C20—C15—C12 | 120.77 (12) |
| C7—C6—H6A | 109.5 | C16—C15—C12 | 122.27 (11) |
| N2—C6—H6B | 109.5 | C17—C16—C15 | 121.23 (13) |
| C7—C6—H6B | 109.5 | C17—C16—C21 | 117.81 (13) |
| H6A—C6—H6B | 108.1 | C15—C16—C21 | 120.89 (11) |
| O1—C7—C6 | 111.65 (12) | C18—C17—C16 | 119.94 (15) |
| O1—C7—H7A | 109.3 | C18—C17—H17 | 120.0 |
| C6—C7—H7A | 109.3 | C16—C17—H17 | 120.0 |
| O1—C7—H7B | 109.3 | C19—C18—C17 | 119.81 (14) |
| C6—C7—H7B | 109.3 | C19—C18—H18 | 120.1 |
| H7A—C7—H7B | 108.0 | C17—C18—H18 | 120.1 |
| N2—C8—C9 | 114.47 (10) | C18—C19—C20 | 120.64 (14) |
| N2—C8—H8A | 108.6 | C18—C19—H19 | 119.7 |
| C9—C8—H8A | 108.6 | C20—C19—H19 | 119.7 |
| N2—C8—H8B | 108.6 | C19—C20—C15 | 121.46 (14) |
| C9—C8—H8B | 108.6 | C19—C20—H20 | 119.3 |
| H8A—C8—H8B | 107.6 | C15—C20—H20 | 119.3 |
| C14—C9—C10 | 117.62 (12) | N3—C21—C16 | 177.11 (16) |
| C14—C9—C8 | 121.26 (12) | ||
| C7—O1—C4—C5 | 58.34 (19) | C10—C9—C14—C13 | −0.67 (19) |
| C8—N2—C5—C4 | 177.40 (11) | C8—C9—C14—C13 | −177.75 (12) |
| C6—N2—C5—C4 | 56.40 (14) | C13—C12—C15—C20 | −128.35 (15) |
| O1—C4—C5—N2 | −58.71 (18) | C11—C12—C15—C20 | 51.08 (18) |
| C5—N2—C6—C7 | −56.05 (15) | C13—C12—C15—C16 | 53.85 (18) |
| C8—N2—C6—C7 | −177.18 (12) | C11—C12—C15—C16 | −126.71 (14) |
| C4—O1—C7—C6 | −58.19 (17) | C20—C15—C16—C17 | 0.0 (2) |
| N2—C6—C7—O1 | 58.11 (16) | C12—C15—C16—C17 | 177.92 (13) |
| C5—N2—C8—C9 | 73.85 (14) | C20—C15—C16—C21 | −176.91 (13) |
| C6—N2—C8—C9 | −166.14 (11) | C12—C15—C16—C21 | 1.0 (2) |
| N2—C8—C9—C14 | −130.98 (13) | C15—C16—C17—C18 | 0.0 (2) |
| N2—C8—C9—C10 | 52.04 (16) | C21—C16—C17—C18 | 177.05 (15) |
| C14—C9—C10—C11 | 0.17 (18) | C16—C17—C18—C19 | −0.2 (3) |
| C8—C9—C10—C11 | 177.25 (11) | C17—C18—C19—C20 | 0.3 (3) |
| C9—C10—C11—C12 | 0.45 (18) | C18—C19—C20—C15 | −0.2 (2) |
| C10—C11—C12—C13 | −0.56 (18) | C16—C15—C20—C19 | 0.1 (2) |
| C10—C11—C12—C15 | 179.98 (11) | C12—C15—C20—C19 | −177.84 (13) |
| C11—C12—C13—C14 | 0.05 (19) | C17—C16—C21—N3 | −25 (3) |
| C15—C12—C13—C14 | 179.50 (12) | C15—C16—C21—N3 | 152 (3) |
| C12—C13—C14—C9 | 0.6 (2) |
Footnotes
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB7014).
References
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Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812050957/hb7014sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812050957/hb7014Isup2.hkl
Supplementary material file. DOI: 10.1107/S1600536812050957/hb7014Isup3.cml
Additional supplementary materials: crystallographic information; 3D view; checkCIF report

