Abstract: Photochemical reactions and reactivities of P-methylallyl chloride, sensitized by acetone and by benzene, have been studied. The principal products were an isomer, 1- chloro-1-methylcyclopropane, and a dimer, 5-chloro-4-chloromethyl-2, 4-dimethyl-I-pentene. Smaller amounts of other CS products were also found. The ratio of isomerization to dimerization was markedly dependent upon sensitizer and upon the concentration of ...
