trans-π-Oxocamphorの研究補遺 (第3報)

trans-π-Oxocamphorの酸化阻止剤

抄録

It has been found that potassium thiocyanate or iodide possessed the action of preventing oxidation of trans-π-oxocamphor. This is not due to the inhibition of the catalytic action of the copper ion present but to the inhibition of the chain-reaction of oxidation by decomposition of the peracid. In such a case, KCNS changes to CN^-- and SO₄^-- in the solution, and KI to the halogen, thereby decreasing the peracid. The preventive action of KCNS is due to its sulfur atom and similar effect can be detected in thiourea and thiosemicarbazide but not in KCN, KCNO, urea, and semicarbazide.