作者:James A. Wilkinson、Stephen B. Rossington、John Leonard、Nigel Hussein
DOI:10.1016/j.tetlet.2003.11.138
日期:2004.2
Alkylation of 2-oxygenated diphenylmethane derivatives using sec-butyllithium and (−)-sparteine gave enantiomeric excesses of up to 60% with allyl bromide but alkylations with methyl electrophiles were poorly selective. When compounds with a free hydroxy in the 2-position were alkylated the selectivity was reversed.
使用仲丁基锂和(-)-天冬氨酸对2-氧化的二苯甲烷衍生物进行烷基化,得到的烯丙基溴对映体过量高达60%,但是与甲基亲电试剂的烷基化选择性差。当在2-位具有游离羟基的化合物被烷基化时,选择性相反。