ビス(ジフェニルグリオキシマト)コバルト(II)-ピリジン錯体によるベンジルの水素化反応

抄録

Reactions betweem benzil and hydrogen in the presence of bis(diphenylglyoximato)cobalt (II)-pyridine complex were studied at 20° C under normal pressure. The reaction rate was not affected by the concentration of benzil (Fig.1), and the plot of the reaction rate vs. the concentration of the complex gave sigmoidal curves (Fig.2), and the addition of sodium hydroxide retarded the reaction (Fig.3). This alkali retardation contrasts strikingly. with alkali acceleration observed in the hydrogenation in the presence of bis(dimethylglyoximato) cobalt (II)-pyridine complex.