A process for the production of cyclic carbonates comprising contacting an epoxide with carbon dioxide in the presence of a dimeric aluminium(salen) catalyst, and a co-catalyst capable of supplying Y
−
, where Y is selected from Cl, Br and I, where the dimeric aluminium(salen) catalyst is of formula I:
一种制备环状
碳酸酯的工艺,包括在二聚铝(salen)催化剂和能够提供Y−(其中Y选自Cl、Br和I)的共催化剂存在下,将
环氧化物与
二氧化碳接触,其中二聚铝(salen)催化剂的
化学式为I: