Regioselectivity in the di-π-methane rearrangement; alternative processes in the photochemistry of halogeno-1,4-dienes
Abstract
In the di-π-methane rearrangement, the order of migratory preference is: dihalogenovinyl > diphenylvinyl > dicyanovinyl; a new photorearrangement of 1,4-dienes and a novel rearrangement occurring during photoaddition of benzophenone to a 1,4-diene are reported.