Two new products from the photoisomerization of eucarvone
Abstract
Irradiation of eucarvone (I) adsorbed on silica gel or in trifluoroethanol gives, in addition to the two expected products (IIa and IIb), the bicyclo[4,1,0]enone (V), which subsequently undergoes[1,3]sigmatropic photorearrangement to dehydrocamphor (IV) and a cyclobutanone (VI).