Carbon Black as an Electron-transfer Catalyst. The Two-phase Dehydrogenation of Hydrazo Nitriles by an Aqueous Solution of Potassium Hexacyanoferrate(III), Using Carbon Black as the Catalyst
作者:Norio Tsubokawa、Naoki Tareda、Yasuo Sone
DOI:10.1246/bcsj.55.3541
日期:1982.11
solution of potassium hexacyanoferrate(III), using carbon black as the catalyst, was carried out at 40 °C with shaking. In the presence of carbon black, the two-phase dehydrogenation of hydrazo nitriles was accelerated, and the corresponding azo nitriles were obtained in good yields. The catalytic activity of channel blacks was larger than that of furnace blacks. Moreover, the increasing content of phenolic
以碳黑为催化剂,在 40 °C 振荡条件下,通过六氰基高铁酸钾 (III) 的水溶液对偶氮腈进行两相(水相和有机相)脱氢。在炭黑的存在下,加速了偶氮腈的两相脱氢,并以良好的收率获得了相应的偶氮腈。槽黑的催化活性大于炉黑。此外,酚羟基含量的增加倾向于增加炭黑的催化活性。很明显,炭黑表面的酚羟基在两相脱氢中充当电子转移催化剂。反应方案被认为如下。在水相中,