Rhodium‐Catalyzed Enantioselective Oxidative [3+2] Annulation of Arenes and Azabicyclic Olefins through Twofold C−H Activation
作者:Ruijie Mi、Guangfan Zheng、Zisong Qi、Xingwei Li
DOI:10.1002/anie.201911086
日期:2019.12.2
mostly limited to ortho selectivity. Activation of both ortho and meta C-H bonds constitutes a particularly important strategy for annulation, but has rarely been studied in enantioselective systems. Reported herein is rhodium(III)-catalyzed asymmetric [3+2] transannulation of arenes with 7-azabenzonorbornadienes. Two distinct classes of arenes have been identified as substrates, and the coupling proceeded
CH键的活化主要限于邻位选择性。邻位和间位CH键的激活都构成了特别重要的环空策略,但很少在对映选择性系统中进行研究。本文报道的是铑(III)催化的芳烃与7-氮杂苯并降冰片二烯的不对称[3 + 2]转环。已经鉴定出两种不同类型的芳烃作为底物,并且通过顺序激活邻位和间位CH键,以高对映选择性和优异的非对映选择性进行偶联。