2,2-Dimethyl-3-(2,2,2-trichloroethyl)cyclopropanecarboxylic acid ethyl ester

Ethyl 2,2-dimethyl-3-(2,2,2-trichloroethyl)cyclopropane-1-carboxylate-"cis major" may be useful in the study of transformation of 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylates to the corresponding 2,2-dibromoethenyl analogs by halogen-exchange reaction.