Intermediates in the decomposition of aliphatic diazo-compounds. Part V. The effects of hydroxylic compounds on the decomposition of 4,4′-dichlorodiphenyldiazomethane catalysed by perchloric and toluene-p-sulphonic acids in acetonitrile
作者:D. Bethell、R. D. Howard
DOI:10.1039/j29680000430
日期:——
The influence of low concentrations of alcohols on the rate of decomposition of 4,4′-dichlorodiphenyldiazomethane in acetonitrile catalysed by perchloric and toluene-p-sulphonic acids and on the partitioning of the intermediate carbonium ion forming tetra-arylethylene and 4,4′-dichlorodiphenylmethyl alkyl ether has been studied. The results have been used to estimate the relative acidities, basicities
低浓度醇对高氯酸和甲苯-对-磺酸催化的乙腈中4,4'-二氯二苯基重氮甲烷分解速率的影响以及对中间体碳酸根离子形成四芳基乙烯和4,4'-的分配的影响已经研究了二氯二苯基甲基烷基醚。该结果已用于估计乙腈中醇的相对酸度,碱性和亲核活性。醇充当氢键供体和接受质子的能力似乎在很大程度上受到电子影响的控制。然而,醇对4,4'-二氯-二苯甲基阳离子的反应性似乎主要由空间因素决定。