Synthetic applications of radical ring-opening: use of cyclopropylmethyl radicals
Abstract
Cyclopropanation of cyclic allylic alcohols followed by radical deoxygenation leads, by peripheral ring-opening of the cyclopropylmethyl system, to alkyl-substituted cycloalkenes (Scheme 1); the alkyl group can itself be substituted (during the cyclopropanation stage), synthetic equivalents of allylic alcohols can be used, and the overall process occurs with predictable stereo- and regio-chemistry.