FeCl<sub>3</sub>-Mediated Arylation of α-Hydroxyphosphonates with Unactivated Arenes: Pseudo-Umpolung in Allylic Phosphonates
作者:Gangaram Pallikonda、Manab Chakravarty
DOI:10.1002/ejoc.201201352
日期:2013.2
An FeCl3-mediated regio- and stereoselective Friedel–Crafts-type arylation of α-hydroxy phosphonates with unactivated arenes has been developed in which the unstable allylphosphonate cations generated are stabilized by extended conjugation. The approach provides a simple, efficient and economic approach to highly demanding stereoselective γ-aryl-substituted vinylphosphonates and dialkyl (diarylmethyl)phosphonates
已经开发了 FeCl3 介导的区域选择性和立体选择性 Friedel-Crafts 型 α-羟基膦酸酯与未活化芳烃的芳基化,其中生成的不稳定烯丙基膦酸酯阳离子通过扩展共轭稳定。该方法为具有良好区域选择性的高要求的立体选择性γ-芳基取代的乙烯基膦酸酯和二烷基(二芳基甲基)膦酸酯提供了一种简单、有效和经济的方法。这些反应在温和的条件下进行,并且在没有任何额外溶剂的情况下进行。