Cimemoxin

Cimemoxin (INN), or cyclohexylmethylhydrazine, is a hydrazine monoamine oxidase inhibitor (MAOI) antidepressant which was never marketed.

Synthesis
It possesses 50 times the relative activity of iproniazid and 25x nialamide (see patent).

3-Cyclohexene-1-carbaldehyde [100-50-5] (aka 1,2,3,6-Tetrahydrobenzaldehyde) is reacted with N-acetylhydrazine to give the hydrazone, which is reduced by catalytic hydrogenation. The acetyl group is removed by acid hydrolysis.