Aluminum-Catalyzed Selective Hydroboration of Alkenes and Alkynylsilanes
作者:Feng Li、Xu Bai、Yuan Cai、Han Li、Shuo-Qing Zhang、Feng-Hua Liu、Xin Hong、Youjun Xu、Shi-Liang Shi
DOI:10.1021/acs.oprd.9b00205
日期:2019.8.16
An efficient aluminum-catalyzed selective hydroboration of alkenes and alkynylsilanes is reported. A wide variety of alkenes and alkynylsilanes bearing various functional groups and heterocyclic substituents were converted to boronicester products in good yields with high selectivity. Mechanistically, density functional theory calculations favored a mechanism involving the insertion of the double
Copper-Catalyzed Enantioselective Markovnikov Protoboration of α-Olefins Enabled by a Buttressed N-Heterocyclic Carbene Ligand
作者:Yuan Cai、Xin-Tuo Yang、Shuo-Qing Zhang、Feng Li、Yu-Qing Li、Lin-Xin Ruan、Xin Hong、Shi-Liang Shi
DOI:10.1002/anie.201711229
日期:2018.1.26
Reported is a highly enantioselective copper‐catalyzed Markovnikov protoboration of unactivatedterminalalkenes. A variety of simple and abundant feedstock α‐olefins bearing a diverse array of functional groups and heterocyclic substituents can be used as substrates, and the reaction proceeds under mild reaction conditions at ambient temperature to provide expedient access to enantioenriched alkylboronic