Process for the carbonylation of ethylenically unsaturated compounds and bidentate diphosphine composition used in this process

摘要

Process for the carbonylation of optionally substituted ethylenically unsaturated compounds by reaction with carbon monoxide and a coreactant in the presence of a catalyst system. The catalyst system includes (a) a source of Pt group metal cations, (b) a certain bidentate diphosphine composition.