Mild Two-Step Process for the Transition-Metal-Free Synthesis of Carbon−Carbon Bonds from Allylic Alcohols/Ethers and Grignard Reagents
作者:Xinping Han、Yanhua Zhang、Jimmy Wu
DOI:10.1021/ja100747n
日期:2010.3.31
A mild two-step process for the regioselective, transition-metal-free preparation of carbon-carbon bonds from allylic alcohols/ethers and Grignard reagents is described. This process obviates the need for the harsh deprotection conditions usually required for removal of methyl ethers. The synthesis is accomplished by photochemically promoted allylic substitution reactions of allylic alcohols and ethers
描述了从烯丙醇/醚和格氏试剂中区域选择性、无过渡金属制备碳-碳键的温和两步法。该过程不需要去除甲醚通常所需的苛刻的脱保护条件。该合成是通过烯丙醇和醚与二乙基硫代磷酸的光化学促进的烯丙基取代反应,然后在过渡金属下与各种格氏试剂形成 sp(3)-sp(3) 或 sp(2)-sp(3) 键来完成的。免费条件。根据亲核试剂的性质,可以控制碳-碳键形成事件的区域选择性以提供四级或三级碳中心。