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3-Ethyl-cis-2,6-di-phenyl-piperidine.

ABSTRACT: In the title compound, C19H23N, the piperidine ring adopts a chair conformation. The phenyl rings at the 2,6-positions of the piperidine ring occupy equatorial orientations. The crystal structure features C-H?? inter-actions.

SUBMITTER: Maheshwaran V

PROVIDER: S-EPMC3884463 | biostudies-other | 2013

REPOSITORIES: biostudies-other

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3-Ethyl-cis-2,6-di-phenyl-piperidine.

Maheshwaran V V Abdul Basheer S S Akila A A Ponnuswamy S S Ponnuswamy M N MN

Acta crystallographica. Section E, Structure reports online 20130817 Pt 9

In the title compound, C19H23N, the piperidine ring adopts a chair conformation. The phenyl rings at the 2,6-positions of the piperidine ring occupy equatorial orientations. The crystal structure features C-H⋯π inter-actions. ...[more]

PMID: 24427069

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3,5-Dimethyl-2,6-di-phenyl-piperidine.

Project description:In the title compound, C19H23N, the piperidine ring has a chair conformation. The phenyl rings are inclined to one another by 52.76 (16)°. One of the methyl substituents on the piperidine ring is axial while the other is equatorial, like the phenyl rings. In the crystal, mol-ecules are linked via C-H⋯π inter-actions, forming zigzag chains along [001].

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N-[(2,6-Di-ethyl-phen-yl)carbamo-thio-yl]-2,2-di-phenyl-acetamide.

Project description:In the title compound, C25H26N2OS, the diethyl-substituted benzene ring forms dihedral angles of 67.38 (9) and 55.32 (9)° with the terminal benzene rings. The mol-ecule adopts a trans-cis conformation with respect to the orientations of the di-phenyl-methane and 1,3-di-ethyl-benzene groups with respect to the S atom across the C-N bonds. This conformation is stabilized by an intra-molecular N-H⋯O hydrogen bond, which generates an S(6) ring. In the crystal, pairs of N-H⋯S hydrogen bonds link the mol-ecules into inversion dimers, forming R 2 (2)(6) loops. The dimer linkage is reinforced by a pair of C-H⋯S hydrogen bonds, which generate R 2 (2)(8) loops. Weak C-H⋯π and π-π [centroid-centroid seperation = 3.8821 (10) Å] inter-actions also occur in the crystal structure.

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1-(2,2-Di-chloro-acet-yl)-3-ethyl-2,6-di-phenyl-piperidin-4-one.

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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Ethyl 3-methyl-2,6-diphenyl-piperidine-1-carboxyl-ate.

Project description:In the title compound, C(21)H(25)NO(2), the piperidine ring adopts a twisted boat conformation characterized by puckering parameters ? = 89.5?(1) and ? = 257.5?(2)°. The phenyl groups are located in equatorial and axial positions on the central piperidine ring, while the methyl group is in an equatorial position. The dihedral angle between the phenyl rings is 49.8?(1)°. An intra-molecular C-H?O inter-action occurs. The crystal structure features weak inter-molecular C-H?O inter-actions and a stabilizing inter-molecular C-H?? contact involving the axial phenyl ring.

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Dimethyl cis-4-hydroxy-methyl-piperidine-2,6-dicarboxyl-ate.

Project description:The heterocyclic core of the title compound, C(10)H(17)NO(5), adopts a chair conformation with its three C substituents positioned equatorially. In the crystal, inter-molecular O-H?N hydrogen bonds between neighbouring mol-ecules lead to chains along b. These chains are connected by hydro-phobic inter-actions, forming infinite layers and N-H?O=C contacts between mol-ecules of adjacent layers give rise to a three-dimensional structure.

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2,2'-[(2S*,6R*)-Piperidine-2,6-di-yl]-di-pro-pan-2-ol.

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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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Crystal structure of 2-chloro-1-(3-ethyl-2,6-di-phenyl-piperidin-1-yl)ethanone.

Project description:In the racemic title compound, C21H24ClNO, the dihedral angle between the planes of the benzene rings is 86.52?(14)° and those between the benzene rings and the piperidine ring are 61.66?(14) and 86.39?(14)°. The piperidine ring adopts a twisted boat conformation. No directional inter-actions could be detected in the crystal.

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Crystal structure and catalytic activity of tetra-kis-(μ2-ethyl 2,6-di-tert-butyl-4-methyl-phenyl phos-phato-κ2O:O')bis-(ethyl 2,6-di-tert-butyl-4-methyl-phenyl phosphato-κ2O,O')dilutetium n-heptane disolvate.

Project description:The title complex, [Lu2(C17H28O4P)6]·2C7H16, was formed in the reaction between potassium 2,6-di-tert-butyl-4-methyl-phenyl ethyl phosphate, [K(2,6- t Bu2-4-MeC6H2-O)(EtO)PO2], and LuCl3(H2O)6 in water, followed by vacuum drying and recrystallization from heptane. Its crystal structure has triclinic (P [Formula: see text]) symmetry at 120 K. The lutetium tris-(phosphate) complex has a binuclear [Lu2(μ-OPO)4] core and the organophosphate ligand exhibits κ2O,O' terminal and μ2-κ1O:κ1O' bridging coordination modes with the LuIII ion being sixfold coordinated. The complex is of inter-est as a precatalyst in the acrylo-nitrile polymerization process and displays good catalytic activity under mild conditions.

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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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