Hydrogenation of heterocyclic analogs of β-nitrostyrene over palladium catalyst

A study is made of the liquid phase hydrogenation of-(-furyl)-and-(-thienyl)--nitroethylenes over Pd black. It is shown that the nature of the substituent (phenyl, furyl, thienyl) does not affect the mode of addition of the hydrogen to the nitrovinyl group. Conditions are found for catalytic synthesis of high yields of heterylacetaldehyde oximes from nitroalkenes.