Synthesis of enantiomerically pure Sb-chirogenic organoantimony compounds and their crystal structures

Sb-chirogenic organoantimony compounds bearing heteroatom groups on the o-position of an aryl group have been prepared by nucleophilic displacement of the ethynyl moiety on (1-naphthyl)(phenylethynyl)(p-tolyl)stibane with aryllithium reagents. Optical resolution of the racemic compounds thus synthesized was achieved via separation of a diastereomeric mixture of their palladium complexes.