In the title compound, C(27)H(21)NO, the piperidine ring adopts a chair conformation. The mean plane through the piperidine ring makes dihedral angles of 49.27 (5) and 63.07 (5)° with the naphthalene ring systems. In the crystal, mol-ecules are linked into dimers via pairs of inter-molecular C-H⋯O inter-actions, generating ten-membered R(2) (2)(10) ring motifs. C-H⋯π inter-actions further stabi...

In the title compound, C(17)H(23)N(3), both piperidine rings adopt chair conformations. In the crystal packing, intermolecular C-H⋯N hydrogen bonds and C-H⋯π interactions are present.

The asymmetric unit of the title compound, C(27)H(30)N(2)O(2), comprises two independent mol-ecules. The dihedral angles between the phenyl rings in the two mol-ecules are 55.59 (8) and 55.39 (8)°. The piperidine rings adopt chair conformations. The crystal structure is stabilized by weak inter-molecular C-H⋯O and C-H⋯N hydrogen bonds. The crystal studied was a non-merohedral twin with a domian...

The title compound, C13H17NO3, adopts a conformation in which the aromatic ring and the mean plane of the piperidine ring are almost perpendicular to each other [dihedral angle = 79.25 (6)°]. The presence of the carbonyl group alters the conformation of the piperidine ring from a chair to a twisted half-chair conformation. In the crystal, pairs of strong O-H⋯O hydrogen bonds link the mol-ecules...

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 hydro...

In the title mol-ecule, C(22)H(19)NOS(2), the piperidine ring adopts an envelope conformation with the benzyl substituent in an equatorial position. Each of the olefinic double bonds has an E configuration. The dihedral angle between the two thio-phene rings is 1.55 (18)°. The thio-phene rings form angles of 72.21 (14) and 73.43 (14)° with the phenyl ring. Both thio-phene rings are disordered o...