Novel photoreactions of styrylcyclopropanes via photo-induced electron transfer
Abstract
9,10-Dicyanoathracene-sensitized photoreaction of styrylcyclopropanes in the presence of Cu(BF4)2 in MeCN–MeOH gives α-cyclopropyl nenzyl ketones as major products, which are produced via a two-electron oxidation of styrylcyclopropanes followed by a 1,2-migration of the cyclopropyl group.