Sc. Bennur et al., FREE-RADICAL ELIMINATION AND OXIDATION OF 1,1,1-TRICHLORO-2,2-BIS(P-SUBSTITUTED PHENYL)ETHANES, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 35(1), 1996, pp. 74-76
The reaction of 1, 1, 1-trichloro-2, 2-bis(p-substituted-phenyl)ethane
s with bromine in carbon tetrachloride under nitrogen atmosphere; and
in the presence of light results in the formation of 1, 1-dichloro-2,
2-bis(p-substituted-phenyl)ethylenes. Whereas an identical reaction co
nducted under oxygen atmosphere, leads to the formation of benzophenon
e derivatives.