A synthetic equivalent for the butadienyl carbonium ion: use of 4-(trimethylsilyl)but-2-ynal for preparation of 1,3-dienes and macroexpansion of cyclic ketones
Abstract
4-(Trimethylsily)but-2-ynal (3) is a synthetic equivalent for the butadienyl carbonium ion and can be used for preparation of terminal 1,3-dienes and for macroexpansion of cyclic ketones.