Co2(CO)8-catalyzed ring-opening carbonylation of oxiranes and oxetane smoothly proceeds with high regioselectivity under 1 atm of carbon monoxide at room temperature to give the corresponding β- and γ-siloxy amides in high yields, respectively. [(R3Si)2NR1R2]+[Co(CO)4]− is thought to be an active catalyst species and directs the high regioselectivity of the carbonylation.
Co2(CO)8催化的环开裂羰基化反应在1 atm的
一氧化碳和室温条件下顺利进行,具有高区域选择性,生成相应的β-和γ-
硅氧基胺,产率均很高。[(R3Si)2NR1R2]+[Co(CO)4]− 被认为是活性催化物种,并指导羰基化的高区域选择性。