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1-Formyl-c-3,t-3-dimethyl-r-2,c-6-di-phenyl-piperidin-4-one.

ABSTRACT: In the title compound, C(20)H(21)NO(2), the piperidine ring adopts a distorted boat conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring subtend angles of 86.0 (1) and 67.3 (1)° with the mean plane of the piperidine ring (all six non-H atoms). The crystal packing features C-H⋯O inter-actions.

SUBMITTER: Ravichandran K

PROVIDER: S-EPMC3297920 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(E)-1,3-Dimethyl-2,6-di-phenyl-piperidin-4-one O-(phen-oxy-carbon-yl)oxime.

Project description:The title piperidine derivative, C26H26N2O3, has an E conformation about the N=C bond. The piperidine ring has a chair conformation and its mean plane is almost perpendicular to the attached phenyl rings, making dihedral angles of 87.47?(9) and 87.34?(8)°. The planes of these two phenyl rings are inclined to one another by 60.38?(9)°. The plane of the terminal phenyl ring is tilted at an angle of 32.79?(9)° to the mean plane of the piperidine ring. The mol-ecular conformation is stabilized by two intra-molecular C-H?O contacts. There are no significant inter-molecular inter-actions in the crystal.

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Project description:In the title mol-ecule, C(21)H(25)NO, the piperidine ring adopts a chair conformation. The benzene rings and one of the methyl groups attached to the piperidine ring have equatorial orientations. The dihedral angle between the two benzene rings is 72.53?(9)°. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds. Weak C-H?? inter-actions involving the benzene rings are also present in the crystal structure.

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Project description:In the title compound, C21H24ClNO, the piperidine ring adopts a chair conformation. The two phenyl rings are inclined to one another by 20.7?(1)°, and are inclined to the mean plane of the four planar atoms of the piperidine ring by 87.64?(10) and 70.8?(1)°. The mol-ecular structure features short intra-molecular C-H?Cl and C-H?O contacts. In the crystal, there are no significant inter-molecular inter-actions present.

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Project description:The asymmetric unit of the title compound, C21H21Cl2NO2, contains two independent mol-ecules that show similar geometrical features. The piperidine ring adopts a distorted boat conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring are oriented at angles of 65.4 (1) [64.7 (2)°] and 89.2 (1)° [86.3 (2)°] with respect to the least-squares plane of the piperidine ring. In the crystal, adjacent mol-ecules are linked by a network of C-H⋯O inter-actions, forming a C(6) chain along the c-axis direction.

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Project description:In the title compound, C26H26N2O2, the piperidine ring exhibits a chair conformation. The phenyl rings are attached to the central heterocycle in an equatorial position. The dihedral angle between the planes of the phenyl rings is 57.58?(8)°. In the crystal, C-H?O inter-actions connect the mol-ecules into zigzag chains along [001].

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Project description:In the title compound, C(22)H(25)NO(4), the piperidine ring adopts a distorted boat conformation. The methyl groups at the 3 and 5 positions of the piperidine ring are in axial and equatorial orientations, respectively. Both H and O atoms in the aldehyde group are disordered over two positions with occupancies of 0.534?(5) and 0.466?(5). In the crystal, the mol-ecules are linked into a three-dimensional network by C-H?O hydrogen bonds.

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Project description:In the title compound, C(22)H(25)NO(4), the piperidine ring adopts a distorted boat conformation. The two benzene rings are approximately perpendicular to each other, making a dihedral angle of 86.2 (8)°. The crystal packing is stabilized by C-H⋯O and C-H⋯π inter-actions.

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