Nb. Mandal et al., One pot synthesis of 2,2-dichloro-1, 1-bis(4-dialkylaminophenyl)ethylenes by Friedel-Crafts acylation, J CHEM R-S, (11), 2000, pp. 510-511
A simple method is described for the preparation of 2,2-dichloro-1,1-bis(4-
dialkylaminophenyl)ethylenes from dialkyl anilines by Friedel-Crafts reacti
on using AlCl3 as Lewis acid and dichloroacetyl chloride as acylating agent
.