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1-Di-chloro-acetyl-t-3-isopropyl-r-2,c-6-di-phenyl-piperidin-4-one.

ABSTRACT: In the title compound, C22H23Cl2NO2, the piperidine ring adopts a twist-boat conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring subtend dihedral angles of 60.6 (2) and 84.2 (1)°, respectively, with the mean plane of the piperidine ring. In the crystal, mol-ecules are linked by C-H⋯O inter-actions into zigzag chains running along the c-axis direction.

SUBMITTER: Sugumar P

PROVIDER: S-EPMC3793827 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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1-Di-chloro-acetyl-t-3-isopropyl-r-2,c-6-di-phenyl-piperidin-4-one.

Sugumar P P Kayalvizhi R R Mini R R Ponnuswamy S S Ponnuswamy M N MN

Acta crystallographica. Section E, Structure reports online 20130727 Pt 8

In the title compound, C22H23Cl2NO2, the piperidine ring adopts a twist-boat conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring subtend dihedral angles of 60.6 (2) and 84.2 (1)°, respectively, with the mean plane of the piperidine ring. In the crystal, mol-ecules are linked by C-H⋯O inter-actions into zigzag chains running along the c-axis direction. ...[more]

PMID: 24109414

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1-Chloro-acetyl-3,3-dimethyl-2,6-di-phenyl-piperidin-4-one.

Project description:In the mol-ecule of the title compound, C(21)H(22)ClNO(2), the piperidine ring adopts a distorted boat conformation. The two phenyl rings are nearly orthogonal to each other with a dihedral angle of 87.1 (1)°. In the crystal structure, the mol-ecules are linked into a three-dimensional network by C-H⋯O and C-H⋯π inter-actions.

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1-Chloro-acetyl-3-isopropyl-r-2,c-6-diphenyl-piperidin-4-one.

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Project description:In the title compound, C(21)H(20)Cl(3)NO(2), the piperidin-4-one ring adopts a boat conformation. The two 2-chloro-phenyl groups are approximately perpendicular to each other, making a dihedral angle of 74.07 (8)°.

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Project description:In the title compound, C(21)H(21)Cl(3)N(2)O(2), the piperidine ring adopts a distorted boat conformation. One of the chloro-phenyl rings is almost perpendicular to the best plane through piperidine ring, making a dihedral angle of 88.7 (1)°, whereas the other ring is twisted by 71.8 (1)°. The crystal packing is stabilized by inter-molecular C-H⋯O, C-H⋯Cl and O-H⋯O inter-actions.

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Project description:In the title compound C(19)H(16)ClF(2)NO(2), the piperidone ring adopts a twist-boat conformation with the two out-of-plane atoms deviating by 0.544 (1) and 0.511 (1) Å from the plane through the remaining atoms in the ring. Sterically favoured non-H-atom C⋯O inter-molecular contacts are observed in the structure, within a 3.00 Å range. The crystal packing is stabilized by C-H⋯O and C-H⋯F hydrogen bonds and an inter-molecular π-π inter-action [centroid-centroid separation of 3.783 (1) Å]. Alternating C-H⋯O and C-H⋯F inter-molecular inter-actions generate chains running along the a axis, while a centrosymmetric R(2) (2)(16) ring involving C-H⋯O inter-actions is formed centred at (1/2, 1/2, 0).

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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⋯π 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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