Mechanistic Study of Electrochemical Oxidation of 2,5-Dihydroxybenzoic Acid and 3,4-Dihydroxybenzaldehyde in the Presence of 3-Hydroxy-1H-phenalene-1-one
作者:Davood Nematollahi、Amaneh Amani
DOI:10.1248/cpb.56.513
日期:——
The mechanism of the electrochemical oxidation of 2,5-dihydroxybenzoic acid and 3,4-dihydroxybenzaldehyde in the presence of 3-hydroxy-1H-phenalene-1-one as a nucleophile has been studied in water/acetonitrile (80/20 v/v) solution using cyclic voltammetry and controlled-potential coulometry methods. The results indicate that the quinones derived from oxidation of 2,5-dihydroxybenzoic acid and 3,4-dihydroxybenzaldehyde participate in Michael addition reactions with 3-hydroxy-1H-phenalene-1-one and via ECE and ECEC mechanisms convert to the different products, with good yield under controlled potential conditions, at carbon electrode.
已在水/乙腈(80/20 v/ v) 使用循环伏安法和控制电位库仑法的溶液。结果表明,2,5-二羟基苯甲酸和3,4-二羟基苯甲醛氧化生成的醌类化合物参与与3-羟基-1H-苯那烯-1-酮的迈克尔加成反应,并通过ECE和ECEC机制转化为不同的产物,在受控电位条件下,在碳电极上具有良好的产率。