Studies in decarboxylation. Part 15. The effect of 3-substitution on the rate of decarboxylation of βγ-unsaturated acids

The kinetic effect of substituents at C(3) of βγ-unsaturated acids is consistent with the development of a partial positive charge at that position during decarboxylation. The OMe group increases the rate of decarboxylation as much as 105–106 fold.