Direct Oxidation of Enolate Anions J. Org. Chem., Vol. 40, No. 22, 1975 3253 analyses before and after double bond hydrogenation, comparisons with reference compounds [methyl 9 (10)-and 12-hydroxy-9-octadecenoate, 12-hydroxyoctadecanoate, and 9, lO-and 10, 12-dihydroxyoctadecanoate] and reported fragmentation scheme~.~~ J~*~~ The 9, lO- dihydroxy (threo) compound is derived from methyl oleate; the 10, 12-dihydroxy (threo) ...