Regioselective electrophilic borylation of haloarenes
作者:Alessandro Del Grosso、Josue Ayuso Carrillo、Michael J. Ingleson
DOI:10.1039/c4cc10153g
日期:——
Haloarenes undergo directborylation using amine : BCl3 : AlCl3 in the ratio of 1 : 1 : 2. After esterification the pinacolboronate esters are isolated in good yield with regioselectivity controlled by steric and electronic effects.
Regio‐ and Stereoselective 1,2‐Carboboration of Ynamides with Aryldichloroboranes
作者:Cai You、Mika Sakai、Constantin G. Daniliuc、Klaus Bergander、Shigehiro Yamaguchi、Armido Studer
DOI:10.1002/anie.202107647
日期:2021.9.27
Catalyst-free 1,2-carboboration of ynamides is presented. Readily available aryldichloroboranes react with alkyl- or aryl-substituted ynamides in high yields with complete regio- and stereoselectivity to valuable β-boryl-β-alkyl/aryl α-aryl substituted enamides which belong to the class of trisubstituted alkenylboronates. The 1,2-carboboration reaction is experimentally easy to conduct, shows high