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[(4E)-1-Methyl-2,6-diphenyl-3-(propan-2-yl)piperidin-4-yl-idene]amino 3-methyl-benzoate.

ABSTRACT: In the title compound, C29H32N2O2, the piperidine ring exists in a chair conformation (the bond-angle sum at the sp (2)-hybridized C atom is 359.79°). The phenyl rings and the methyl group substituted on the heterocyclic ring are in equatorial orientations. In the crystal, pairs of C-H?? inter-actions result in the formation of inversion dimers.

SUBMITTER: Vinuchakkaravarthy T

PROVIDER: S-EPMC3793771 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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[(4E)-1-Methyl-2,6-diphenyl-3-(propan-2-yl)piperidin-4-yl-idene]amino 3-methyl-benzoate.

Vinuchakkaravarthy T T Sivakumar R R Srinivasan T T Thanikachalam V V Velmurugan D D

Acta crystallographica. Section E, Structure reports online 20130720 Pt 8

In the title compound, C29H32N2O2, the piperidine ring exists in a chair conformation (the bond-angle sum at the sp (2)-hybridized C atom is 359.79°). The phenyl rings and the methyl group substituted on the heterocyclic ring are in equatorial orientations. In the crystal, pairs of C-H⋯π inter-actions result in the formation of inversion dimers. ...[more]

PMID: 24109358

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[(4E)-3-Ethyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene]amino 3-methyl-benzoate.

Project description:In the title compound, C28H30N2O2, the piperidine ring exists in a chair conformation with an equatorial orientation of the phenyl rings and methyl group substituted on the heterocycle. In the crystal, C-H?? inter-actions result in chains of mol-ecules running parallel to the a-axis direction.

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Methyl ({[(4E)-1,3-dimethyl-2,6-di-phenyl-piperidin-4-yl-idene]amino}-oxy)acetate.

Project description:In the title compound, C22H26N2O3, the piperidine ring exhibits a chair conformation. The phenyl rings attached to the piperidine at the 2- and 6-positions have axial orientations. These rings make a dihedral angle of 49.75?(11)°. The amino-oxy acetate group attached at the 4-position has an equatorial orientation. In the crystal, inversion dimers linked by pairs of C-H?? inter-actions occur.

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Crystal structures of (E)-(3-ethyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene)amino phenyl carbonate and (E)-(3-isopropyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene)amino phenyl carbonate.

Project description:In the title compounds, C27H28N2O3, (I), and C28H30N2O3, (II), the conformation about the C=N bond is E. The piperidine rings adopt chair conformations with the attached phenyl rings almost normal to their mean planes, the dihedral angles being 85.82?(8) and 85.84?(7)° in (I), and 87.98?(12) and 86.42?(13)° in (II). The phenyl rings are inclined to one another by 52.87?(8)° in (I) and by 60.51?(14)° in (II). The main difference in the conformation of the two compounds is the angle of inclination of the phen-oxy-carbonyl ring to the piperidine ring mean plane. In (I), these two planes are almost coplanar, with a dihedral angle of 2.05?(8)°, while in (II), this angle is 45.24?(13)°. In the crystal of (I), mol-ecules are linked by C-H?O hydrogen bonds, forming inversion dimers with R 2 (2)(14) loops. The dimers are linked via C-H?? inter-actions forming a three-dimensional network. In the crystal of (II), there are no significant inter-molecular inter-actions present.

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(4E)-N-[(2-Bromo-phen-yl)meth-oxy]-1,3-dimethyl-2,6-diphenyl-piperidin-4-imine.

Project description:In the title compound, C(26)H(27)BrN(2)O, the piperidine ring has a chair conformation and all ring substituents occupy equatorial positions, apart from the double-bonded N atom, which occupies a bis-ectional position. The dihedral angle formed between the phenyl rings is 61.18?(19)°, and the phenyl rings form dihedral angles of 49.78?(19) and 69.2?(18)° with the bromo-benzene ring. The latter is coplanar with the meth-oxy(methyl-idene)amine fragment [N-O-C-C torsion angle = -171.7?(2)°]. Linear supra-molecular chains, approximately along [112], sustained by C-H?? inter-actions, feature in the crystal packing.

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Project description:In the title compound, C(26)H(27)ClN(2)O, the piperidine ring has a chair conformation and all of the ring substituents at Csp(3) atoms occupy equatorial positions. The dihedral angle formed between the phenyl rings is 48.11?(9)°. The chloro-benzene ring occupies a position orthogonal to the meth-oxy(methyl-idene)amine residue [N-O-C-C torsion angle = -87.90?(15)°]. The conformation about the imine C=N bond [1.278?(2)?Å] is E, and the chloro substituent is anti to the piperidine N atom. Helical supra-molecular chains along [010] are sustained by C-H?? inter-actions in the crystal packing.

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Project description:In the title compound, C(20)H(20)N(4)O(2), the piperidine ring adopts a distorted boat conformation. The two phenyl rings form dihedral angles of 82.87?(1) and 84.40?(1)° with respect to the piperidine ring. The crystal packing is stabilized by inter-molecular C-H?O and C-H?N inter-actions.

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(1-Acetyl-2,6-diphenyl-piperidin-4-yl-idene)(phen-yl)acetonitrile.

Project description:In the title mol-ecule, C(27)H(24)N(2)O, the piperidine ring adopts a boat conformation. The acetyl group at position 1 has a bis-ectional orientation. The two phenyl rings attached to the piperidine ring at positions 2 and 6 have bis-ectional and axial orientations, respectively, and make a dihedral angle of 75.27?(10)°. The phenyl-acetonitrile group at position 4 has an equatorial orientation. Mol-ecules are linked by C-H?N, C-H?O inter-molecular and C-H?? inter-actions. A C-H?O intra-molecular inter-action is also found in the mol-ecule.

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Methyl 4-(piperidin-1-ylcarbon-yl)benzoate.

Project description:In the title compound, C(14)H(17)NO(3), the piperidine ring has a chair conformation and an intra-molecular C-H?O inter-action stabilizes the mol-ecular conformation. In the crystal, weak inter-molecular C-H?O inter-actions occur.

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(E)-N'-(3,3-Dimethyl-2,6-diphenyl-piperidin-4-yl-idene)isonicotinohydrazide.

Project description:In the title mol-ecule, C(25)H(26)N(4)O, the piperidine ring adopts a chair conformation, with the plane through the four coplanar atoms making dihedral angles of 84.76?(6), 82.28?(5) and 81.91?(6)° with the pyridine-ring and the phenyl rings at the 2 and 6 positions, respectively. The pyridine ring makes dihedral angles of 64.13?(8) and 10.75?(8)° with the phenyl rings at the 2 and 6 positions, respectively. The dihedral angle between the two phenyl rings is 53.57?(8)°. The phenyl rings and one of the methyl groups at position 3 have an equatorial orientation. In the crystal, mol-ecules are linked by N-H?O and C-H?O hydrogen bonds.

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