Synthesis of Dibenzophospholes by Tf<sub>2</sub>O-Mediated Intramolecular Phospha-Friedel–Crafts-Type Reaction
作者:Kazutoshi Nishimura、Koji Hirano、Masahiro Miura
DOI:10.1021/acs.orglett.9b00219
日期:2019.3.1
A Tf2O-mediated intramolecular phospha-Friedel–Crafts-type reaction of secondary biarylphosphine oxides has been developed. The reaction is promoted simply by Tf2O to form the corresponding dibenzophospholes under metal-free conditions. The starting substrates are readily available and easy-to-handle phosphine oxides, and the regioselectivity is controlled by the innate electronic nature. Thus, this