Palladium-Catalyzed Divergent Reactions of α-Diazocarbonyl Compounds with Allylic Esters: Construction of Quaternary Carbon Centers
作者:Zi-Sheng Chen、Xin-Hua Duan、Ping-Xin Zhou、Shaukat Ali、Jian-Yi Luo、Yong-Min Liang
DOI:10.1002/anie.201106619
日期:2012.2.6
two: α‐Diazocarbonyl compounds display a diverse pattern of reactivity upon palladium‐catalyzed reaction with esters. Esters bearing an alkynyl group on the carbonyl carbon atom lead to two different CC bonds at the same carbon atom in a single operation through decarboxylation and migratory insertion, whereas aromatic and benzylic acid derivatives afford aromatic and benzylic esters bearing an O‐substituted
举两个例子:在钯催化的酯反应中,α-重氮羰基化合物表现出不同的反应模式。在羰基碳原子上带有炔基的酯通过脱羧和迁移插入在一次操作中在同一碳原子上导致两个不同的CC键,而芳族和苄基酸衍生物则提供带有O取代季铵基的芳族和苄基酯碳中心。