Two stage catalytic hydrogenation of olefinically...

Details Two stage catalytic hydrogenation of olefinically... Two stage catalytic hydrogenation of olefinically...

C - Chemistry, Metallurgy

07

C

260/607.6

C07C 87/14 (1980.01)

Patent

CA 1080748

TWO STAGE CATALYTIC HYDROGENATION OF OLEFINICALLY UNSATURATED DINITRILES Abstract of the Disclosure An olefinically unsaturated dinitrile of the formula Image wherein each R is an alkylene or alkylidene radical and Z is an alkyl radical which is converted to the corresponding saturated dinitrile in the presence of hydrogen a palladium catalyst and at least one alkanol having 1 to 3 carbon atoms. The saturated dinitrile is then converted to the corresponding diamine in the presence of hydrogen, a secondary amine formation suppressant, a ruthen- ium catalyst and at least one diluent selected from the group consisting of tertiary alkanols having 4 to 12 carbon atoms, saturated hydrocarbons having 4 to 12 carbon atoms, and ethers having 4 to 12 carbon atoms.

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