general base-catalyzed reaction to formic acid, nitrous arid and the parent sulfinic arid. The solvent and the kinetic deuterium isotope effects for this reaction have been measured. The Brønstedcoefficient for Ie, the activation parameters and the substituent effects on the rates of hydrolysis and on the solvent induced chemical shift of the methylene protons are discussed. Most likely an Eco2 mechanism
由芳基磺酰基重氮甲烷与硝酸干旱反应制得五种芳基磺酰基甲基硝酸酯(Ia-Ie)。这些酯在通常的碱催化反应中水解成甲酸,亚硝酸和母亚砜。已经测量了该反应的溶剂和动力学氘同位素效应。讨论了布伦斯台德系数,活化参数和取代基对水解速率的影响以及对溶剂诱导的亚甲基质子化学位移的影响。E co 2机制很可能涉及中间的α-氧砜。
Synthesis of Sulfonyldiazomethanes and Acetyldiazomethanes via an Alumina-Mediated Decarboxylation Strategy
作者:Yiyong Yan、Gaoyuan Ma、Wei Wei、Jing Zhao
DOI:10.1071/ch15637
日期:——
Diazo compounds are widely adopted in organic synthesis due to their carbine characteristics. One of the most interesting diazo compounds is diazolsulfonyl. Here, in the current study, we found that diazolsufonyl compounds could be prepared with moderate to excellent yield through decarboxylation of diazosulfonyl acetates by neutral alumina. We hope that this mild and simple method might inspire wider