(E)-4-Bromo-2-[(2,6-diisopropyl­phen­yl)imino­meth­yl]phenol

In the title compound, C19H22BrNO, the dihedral angle between the benzene rings is 76.17 (14)° and an intra­molecular O—H⋯N hydrogen bond with an S(6) graph-set motif is present. One methyl group is disordered over two sets of sites with site occupancies of 0.66 (3) and 0.34 (3). A weak inter­molecular C—H⋯π inter­action is observed in the crystal structure

Oxidative Decarboxylation of <i>N</i>‑Phenyl Glycine by Peroxomonosulfate in a Perchloric Acid MediumCatalytic Effect of Cu²⁺ and VO²⁺ Ions

The kinetics of oxidative decarboxylation of <i>N</i>-phenyl glycine (NPG) by peroxomonosulfate (PMS) in perchloric acid medium was investigated at 278 K. The mechanism of the catalytic effect of vanadium­(IV) (VO²⁺) and copper­(II) (Cu²⁺) in the oxidation was also discussed. The oxidation reaction was first-order, with respect to [NPG] in all of the cases. The rate of the reaction decreased with increase in [H⁺], i.e., the oxidation reaction was acid inhibited. The products were identified by gas chromatography and confirmed by comparing with the authentic sample. The reaction constants involved in the different steps of the reactions were calculated. The catalytic constant (<i>K</i>_c) was determined for the catalyzed reactions and observed that the catalytic efficiency was in the order of VO²⁺ > Cu²⁺

Crystal structure of 3,9,9-trimethyl-2,3,3a,4,9,9a-hexahydro-1H-cyclopenta[b]quinolin-4-ium chloride

The title molecular salt, C15H22N+·Cl−, arose as an unexpected product of the reaction between aniline and melanol in the presence of HCl. The central heterocyclic ring has a half-chair conformation and the five-membered ring has an envelope conformation, with the C atom linked to the N atom as the flap. In the crystal, the ions are linked by N—H...Cl hydrogen bonds, generating chains propagating in the [100] direction. The crystal studied was a merohedral twin with a 0.64 (3):0.36 (3) domain ratio