Several a-substituted glycidic esters, ethyl an-alkyl-a,@-epoxycyclohexylideneacetates, have been prepared. Saponification of these esters and decarboxylation of the resulting glycidic acids gave ketones as primary products, as proved by alternate synthesis, mixed melting points of derivatives and attempted oxidation. Contrary to an earlier report, ethyl a-%- decyl-a,@-epoxycyclohexylideneacetic acid decarboxylated to yield I-cyclohexyl-1- ...