Reactions of dimethyl 3-oxoglutarate with zerovalent compounds of palladium and platinum. Preparation of 1-metallacyclobutan-3-one complexes and the X-ray crystal structure of 2,4-bis(methoxycarbonyl)-1,1-bis(triphenylphosphine)platinacyclobutan-3-one

Abstract

Dimethyl 3-oxoglutarate reacts with the zero-valent complexes [ML₄](M = Pd, L = PPh₃; M = Pt, L = PPh₃, PMePh₂, PMe₂Ph) in the presence of dioxygen to give the metallacyclobutan-3-one complexes (1); the X-ray crystal structure of the title compound (1a) establishes the presence of a highly puckered platinacyclobutanone ring.