Iridium-Catalyzed Cyclative Indenylation and Dienylation through Sequential B(4)–C Bond Formation, Cyclization, and Elimination from <i>o</i>-Carboranes and Propargyl Alcohols
作者:Yonghyeon Baek、Kiun Cheong、Gi Hoon Ko、Gi Uk Han、Sang Hoon Han、Dongwook Kim、Kooyeon Lee、Phil Ho Lee
DOI:10.1021/jacs.0c02121
日期:2020.6.3
indenylation through sequential B(4)-C and intramolecular C-C bond formation from o-carboranes and propargyl alcohols, leading to the formation of B(4)-indenylated-o-carboranes with excellent regioselectivity via direct B-H activation. Moreover, the iridium-catalyzed regioselective 1,3-dienylation has been accessed through sequential B-H activation, dehydration, and decarboxylation, producing B(4)-dienylated-o-carboranes
本文描述了第一个铱催化的环化茚基化,通过连续的 B(4)-C 和分子内 CC 键从邻碳硼烷和炔丙醇形成,导致通过直接形成具有优异区域选择性的 B(4)-茚基-邻碳硼烷BH 激活。此外,铱催化的区域选择性 1,3-二烯化已通过连续 BH 活化、脱水和脱羧来访问,产生 B(4)-二烯化-邻碳硼烷。.