Remarkable Ligand Effects in Regioselective Palladium-Catalysed Allylic Substitution Reactions
作者:Lara Acemoglu、Jonathan M. J. Williams
DOI:10.1002/1615-4169(20010129)343:1<75::aid-adsc75>3.0.co;2-w
日期:2001.1.29
The use of tricyclohexylphosphine (and related phosphines) in palladium-catalysed allylic substitution reactions enables the selective conversion of branched allylic acetates into the branched substitution products (up to 120:1 regioselectivity). Linear allylic acetates do not show the same selectivity for the branched substitution products, thereby demonstrating a memory effect.
在钯催化的烯丙基取代反应中使用三环己基膦(及相关的膦)可以将支链烯丙基乙酸酯选择性转化为支链取代产物(区域选择性高达120:1)。线性烯丙基乙酸酯对支链取代产物没有显示出相同的选择性,从而表现出记忆效应。