<i>In Situ</i>Generation of the Coates Catalyst: A Practical and Versatile Catalytic System for the Carbonylation of<i>meso</i>-Epoxides
作者:Prasad Ganji、David J. Doyle、Hasim Ibrahim
DOI:10.1021/ol201043d
日期:2011.6.17
active catalytic system for the carbonylation of meso- and terminal epoxides to β-lactones is described. The active catalyst, analogous to Coates’ catalyst, is generated in situ from commercially available (TPP)CrCl and Co2(CO)8. This practical system circumvents the preparation of air sensitive cobaltate salts, operates at low catalyst loadings, and allows the carbonylation of functionalized, sterically
描述了一种高活性的催化体系,用于将内消旋和端环氧化物羰基化为β-内酯。活性催化剂类似于Coates的催化剂,是由可商购获得的(TPP)CrCl和Co 2(CO)8原位生成的。此实际系统规避空气敏感的钴盐的制备中,工作在低催化剂负载,并且允许的官能化的羰基化,空间要求和杂环内消旋环氧化物。