Hydrogenation of unsaturated fatty acid methyl esters with diimide from hydroxylamine-ethyl acetate

Methyl esters of 10-undecenoic, oleic, linoleic and castor oil fatty acids were hydrogenated with hydroxylamine-ethyl acetate reagent under nitrogen, without change in position and configuration of double bonds. The fatty acid ester was also found to participate in the generation of diimide. No hydrazide was formed.