化学
区域选择性
异构化
烯醇
氧化脱羧
脱羧
药物化学
烯烃
催化作用
氧化加成
烯丙基重排
立体化学
有机化学
作者
Qian Wang,Shou‐Fu Tian,Chuyi Zhang,Jiangwei Li,Zhixuan Wang,Yonghua Du,Ling Zhou,Jian Lü
出处
期刊:Organic Letters
[American Chemical Society]
日期:2019-09-25
卷期号:21 (19): 8018-8021
被引量:37
标识
DOI:10.1021/acs.orglett.9b03009
摘要
In the presence of a carboxylic acid directing group, Rh-catalyzed regioselective directed dialkylation of B(4,5)–H bonds in o-carboranes and oxidative coupling with allylic alcohols is reported. This strategy constructs a series of 4,5-dialkylated o-carboranes in good yields with excellent regioselectivity. A possible catalytic cycle is proposed that involves a tandem sequence of Rh-catalyzed cage B–H activation, alkene insertion, selective β-H elimination, enol isomerization, and decarboxylation.
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