The Use of Fluoride as a Leaving Group: SN2′ Displacement of a CF Bond on 3,3-Difluoropropenes with Organolithium Reagents To Give Direct Access to Monofluoroalkenes
作者:Maxime Bergeron、Thomas Johnson、Jean-François Paquin
DOI:10.1002/anie.201105138
日期:2011.11.18
Lithium is the key to activate the nucleofuge ability of fluoride in the title transformation (see scheme). This simple and straightforward approach not only provides a practical synthetic method for the preparation of monofluoroalkenes, an important fluorinated motif, but also demonstrates the ability of fluoride to act as a competent leaving group in nucleophilic substitution reactions.
锂是激活标题转化中氟化物的核反应能力的关键(请参阅方案)。这种简单直接的方法不仅为制备重要的氟化基序一氟烯烃提供了一种实用的合成方法,而且还证明了氟化物在亲核取代反应中充当有效的离去基团的能力。