Cinnamaldehyde semicarbazone

Souchay and Graizon [151] considered that two electrons were involved in the reduction of benzophenone semicarbazone. Lund [28] demonstrated a four-electron mechanism for the electrode reaction with initial cleavage of the N —N bond in benzaldehyde semicarbazone, as with benzophenone semicarbazone in mineral acid solution. In the reduction of benzophenone semicarbazone in a solution buffered at pH 4.0 1-benzhydrylsemicarbazide, i. e., the product from the addition of two electrons, was isolated with 30% yield. The semicarbazones of cinnamaldehyde and benzalacetone can be reduced both in the protonated and in the unprotonated form four electrons are required in alkaline solution, but it has not been possible to determine... 

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