Reactions of Asymmetric Bis-(p-alkoxyphenyl) ethylenes with dimethylaniline

1,1-Bis-[p-methoxy(or ethoxy)phenyl]ethylene 1 gave in boiling dimethylaniline in the presence of hydrogen chloride or zinc chloride 1,1-bis-[p-methoxy(or ethoxy)phenyl]-1-p-dimethylaminophenylethane 2 1,1-bis-[p-methoxy(or ethoxy)phenyl]ethane, 1,1-bis-[p-hydroxyphenyl]-ethane and bis-[p-dimethylaminophenyl]methane. The structure of the triarylethanes 2 was proven by synthesis. The isomeric 1,1-bis-[p-methoxy(or ethoxy)phenyl]-2-p-dimethylaminophenylethane 6 was also synthesised.