高效而实用的铜催化内部炔烃的高度区域和立体选择性的硼烷基富集 bis(pinacolato)diboron通过应用配体效应已证明使用催化量的K 2 CO 3作为碱生产Z-烯基硼化合物三(对甲氧基苯基)膦确保反应平稳有效。也可以以优异的选择性使用官能化的炔烃,例如炔丙醇和衍生物以及N-炔丙基甲苯磺酰胺。
Highly regio- and stereoselective synthesis of alkenylboronic esters by copper-catalyzed boron additions to disubstituted alkynes
作者:Hye Ryung Kim、Jaesook Yun
DOI:10.1039/c0cc04496b
日期:——
The copper-catalyzedaddition of bis(pinacolato)diboron to internal alkynes in the presence of methanol generates alkenylboron compounds with high levels of regio- and stereoselectivities. The catalytic efficiency is increased by using monodentate phosphine ligands, especially P(p-tolyl)(3) and a range of internal alkynes was borylated in good yields.