A simple and efficient hydrodehalogenation of 1,1-dihalocyclopropanes

Article abstract of DOI:10.1016/S0040-4039(96)02051-5

1,1-Dibromo- and 1,1-dichlorocyclopropanes are converted into the corresponding monohalocyclopropanes (as mixtures of stereoisomers where appropriate) by reaction with 1.2-1.3 mol. equiv. of ethyl magnesium bromide and a small amount of titanium isopropoxide in ether. In the presence of an excess of ethylmagnesium bromide the product from the dibromide is the non- halogenated cyclopropane. Copyright (C) 1996 Elsevier Science Ltd.