PHOTOCHEMISTRY OF 10-ALKYL-10-CARBOMETHOXY-β-IONONE UNDER BASIC CONDITIONS

Article abstract of DOI:10.1246/cl.1983.651

Irradiation of 10-alkyl-10-carbomethoxy-β-ionones 1a, b under basic conditions gave 2-oxatricyclo<4,4,0,0^1.5>-decane derivatives 5a, b; the mechanism involves initial cis-trans isomerization of the C7-C8 double bonds followed by <2 + 4> cycloaddition reaction and double bonds isomerization.