Reactions of methoxy hydroperoxides derived from methyl oleate. Catalytic hydrogenation

Abstract

Yield improvements in carbonyl compounds Obtained by catalytic hydrogenation of methyl oleate ozonolysis products have been achieved by use of catalyst poisons and by the proper choice of catalyst support. Byproduct dimethyl azelate fornmtion with palladium on charcoal was about 20% in the absence of a poison; 10%, with sodium acetate present in the support; 8%, with triethyl amine in solution. Palladium on caleimn carbonate-lead acetate gave about 7%, palladimn on zinc oxide with pyridine or lead acetate present gave 9%. The literature is reviewed on the catalytic hydrogenation of methoxy hydroperoxides derived from ozonolyses in methanol. AbstractThreoand erythro-9,10-dihydroxystearic acids

Industrial chemical uses of polyunsaturated fatty acids

“…Decomposition of methoxy hydroperoxide can also be minimized by a palladium on calcium carbonate catalyst that has been poisoned with lead acetate (Lindlar catalyst) (44). Here again, basic conditions, this time supplied by the support, inhibit acetal formation.…”