Reactions of fatty cyclopropenoids with hydrogen halides and halogens

The additions of hydrogen halides and halogens to the cyclopropenoid ring of methyl sterculate have been shown to produce ring-opened and/or cyclopropanoid compounds. The composition of the products of these reactions has been determined quantitatively by n.m.r. and oxidative techniques. It is suggested that ring-opened compounds are formed by polar addition whereas halogenocyclopropanoids are produced by radical addition.