Although cx-halogenoalkyllithium reagents' have a strong tendency to split into the corresponding carbene and lithium halide, they can be generated and handled as relatively stable species at lower temperatures and can be utilized for such reactions as addition to carbonyl compounds,2 substitution of alkyl halides,-? etc. Ring opening of oxiranes by these reagents, however, has not been reported to our knowledge. It seems likely that, at the ...
