Carbonylation catalyst process.

摘要

A carbonylation catalyst system, which comprises: a) a source of a Group VIII metal; b) a source of a phosphine having an aromatic substituent containing an imino nitrogen atom; c) a source of protons; and d) a source of an alkylsulphonate anion, and the use of such a catalyst system in the carbonylation of an acetylenically or olefinically unsaturated compound. w