Organophosphorus compounds. XXII. The reaction of tertiary phosphonite, phosphinite and mixed phosphite esters with 2-Benzylideneindan-1,3-dione

Abstract

Diethyl phenylphosphonite and ethyl diphenylphosphinite react with 2-benzylideneindan-1,3-dione(1) to give colourless addition compounds (6) and (8) respectively. The reaction of diethyl methyl phosphite and ethyl dimethyl phosphite with (1) leads to the formation of the corresponding phosphonates (9) and (11). Possible reaction mechanisms are considered and the structural assignments are based on chemical and spectroscopic evidence.