The present invention provides a catalyst system capable of catalysing the carbonylation of an ethylenically unsaturated compound, which system is obtainable by combining:
a) a metal of Group VIB or Group VIIIB or a compound thereof,
b) a bidentate phosphine, arsine or stibine ligand, and
c) an acid,
wherein said ligand is present in at least a 2:1 molar excess compared to said metal or said metal in said metal compound, and that said acid is present in at least a 2:1 molar excess compared to said ligand, a process for the carbonylation of an ethylenically unsaturated compound, a reaction medium, and use of the system.
本发明提供了一种催化剂系统,能够催化烯丙基不饱和化合物的羰基化反应,该系统可通过以下步骤获得:
a)第VIB族或第VIIIB族
金属或其化合物;
b)二齿膦、
砷或
锑配体;
c)酸;
其中,所述
配体的摩尔量至少比所述
金属或所述
金属化合物中的
金属高2:1,所述酸的摩尔量至少比所述
配体高2:1。本发明还提供了一种烯丙基不饱和化合物的羰基化反应过程、反应介质和该系统的用途。