Reductive cleavage of azo compounds catalyzed by commercial zinc dust using ammonium formate or formic acid
作者:Shankare Gowda、K Abiraj、D.Channe Gowda
DOI:10.1016/s0040-4039(01)02370-x
日期:2002.2
Azo compounds, both symmetric and unsymmetric, are cleaved to amine(s) by using commercial zinc dust and ammonium formate or formic acid in methanol, tetrahydrofuran or dioxane at room temperature. The reductive cleavage occurs without hydrogenolysis or hydrogenation of reducible moieties, such as -OH, -CH3, -OCH3, -COOH, -COCH3, halogen, etc. The cleavage is very fast, clean, cost effective and high-yielding
在室温下,使用甲醇,四氢呋喃或二恶烷中的商品锌粉和甲酸铵或甲酸,可将对称和不对称的偶氮化合物裂解为一种或多种胺。还原裂解不发生可水解部分例如-OH,-CH 3,-OCH 3,-COOH,-COCH 3,卤素等的氢解或氢化而进行。该裂解非常快速,清洁,成本有效并且高产率。与早期方法相比,例如在石棉上使用环己烯/ 5%Pd的方法,环己烯/ 10%PdC或肼/ 10%PdC或阮内镍的方法。