Tris(2,4-di-tert-butyl­phen­yl) phosphate

The title compound, C42H63O4P, was isolated from the leaves of Vitex negundo. Two of the tert-butyl groups are disordered over two orientations with occupancy ratios of 0.57 (1):0.43 (1) and 0.67 (1):0.33 (1). Several intra­molecular C—H⋯O inter­actions are observed in the mol­ecular structure

2-Bromo-4-tert-butyl-6-[(pyridin-2-yl­imino)­meth­yl]phenol

In the title compound, C16H17BrN2O, the pyridine and benzene rings are almost coplanar [dihedral angle = 1.3 (2)°]. An intra­molecular O—H⋯Br inter­action forms an S(5) ring motif

[(4E)-3-Ethyl-1-methyl-2,6-diphenylpiperidin-4-ylidene]amino 3-methylbenzoate

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...π interactions result in chains of molecules running parallel to the a-axis direction

(E)-3-Isopropyl-1-methyl-2,6-diphenylpiperidin-4-one O-nicotinoyl oxime

In the title compound, C27H29N3O2, the piperidine ring exists in a chair conformation with an equatorial orientation of the phenyl and methyl substituents. The C—C=N bond angles are significantly different [119.1 (2) and 127.2 (2)°]. The phenyl rings are inclined to one another by 44.90 (14)°, and by 80.85 (13) and 79.62 (12)° to the mean plane of the piperidine ring. The terminal pyridine ring is inclined to the piperidine ring mean plane by 74.79 (15)°. In the crystal, molecules are linked by C—H...π interactions, forming a three-dimensional network

[(4E)-1-Methyl-2,6-diphenyl-3-(propan-2-yl)piperidin-4-ylidene]amino 3-methylbenzoate

In the title compound, C29H32N2O2, the piperidine ring exists in a chair conformation (the bond-angle sum at the sp2-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 interactions result in the formation of inversion dimers

(2E)-2-Benzylidene-9-phenyl-3,4-dihydroacridin-1(2H)-one

In the title compound, C26H19NO, the plane of the aromatic heterocycle makes a dihedral angle of 75.22 (4)° with that of the attached phenyl ring. In the crystal, molecules are connected by C—H...O interactions, generating R22(12) dimers. These dimers are further connected by C—H...π interactions, linking the molecules into chains running along the a-axis direction

3-Bromo-5-tert-butyl-2-hydroxybenzaldehyde

The molecular conformation of the title compound, C11H13BrO2, is stabilized by an intramolecular O—H...O hydrogen bond. All non-H atoms except the methyl groups lie approximately in a common plane (r.m.s. deviation = 0.011 Å)