Patent ID: 6365745
Filing Date: 2002-04-02
Classification: C07C

Abstract:
A method for producing a hydrazine derivative of the formula [2]: whereinR1 is alkyl group having 1-12 carbon atoms, alkoxy group having 1-6 carbon atoms, halogen atom, hydroxyl group, optionally substituted phenyl group, optionally substituted aralkyl group or optionally substituted aromatic heterocyclic group, R2 is alkyl group having 1-12 carbon atoms, alkoxy group having 1-6 carbon atoms, halogen atom, optionally substituted phenyl group, optionally substituted aralkyl group, optionally substituted phenylalkoxy group or optionally substituted aromatic heterocyclic group, and Ar is phenylene group, naphthylene group or aromatic heterocyclic group, which method comprises reducing a hydrazone derivative of the formula [1]wherein R1, R2 and Ar are as defined above, in the presence of at least one base selected from the group consisting of an organic base and an inorganic base, and a metal hydrogenating catalyst.