The preparation of 1-chloro-2, 2-bis (p-methoxyphenyl) ethylene (3 a) and of 1-chloro-2, 2- bis (p-hydroxyphenyl) ethylene (3 b), required for a study of the microbial degradation of methoxychlor (1 a) was reinvestigated. The methoxy compound (3 a) was readily obtained by alkaline dehydrohalogenation of 1, 1-dichloro-2, 2-bis (p-methoxyphenyl) ethane (2 a), but similar treatment of 1, 1-dichloro-2, 2-bis (p-hydroxyphenyl) ethane (2 b) gave a ...
