The mechanism of the photochemical cyclisation of non-conjugated dienes: dimethyl nona-2,7-diene-1,9-dioate
Abstract
Photolysis of acetone solutions of the cis,cis-, the cis,trans-, and the trans,trans-1,6-dienes (VIa–c) leads in each case to cis–trans-isomerization and, at a comparable rate, to formation of the cyclised products (VII) and (VIII).