Chemoselective addition of in situ prepared lithium alkynyl borates to aldehydes: a practical and transition metal free approach toward the synthesis of propargylic alcohols
作者:Irene Notar Francesco、Antoine Renier、Alain Wagner、Françoise Colobert
DOI:10.1016/j.tetlet.2010.01.011
日期:2010.3
A convenient synthesis of functionalized propargylic alcohols arising from the 1,2-addition of lithium alkynyl-trimethyl borate onto aldehydes under transition metal free mild conditions is reported. The reaction tolerates a wide range of functional groups, is highly chemoselective and the propargylic alcohols are isolated in good to excellent yields.
据报道,在无过渡
金属的温和条件下,炔基-三甲基
硼酸锂将1,2-加成到醛上可方便地合成官能化的炔
丙醇。该反应可耐受各种官能团,具有高度的
化学选择性,并且可以以良好或优异的收率分离出炔
丙醇。