Theophylline as a new and green catalyst for the one-pot synthesis of spiro[benzo[ a ]pyrano[2,3- c ]phenazine] and benzo[ a ]pyrano[2,3- c ]phenazine derivatives under solvent-free conditions
作者:Afshin Yazdani-Elah-Abadi、Malek-Taher Maghsoodlou、Razieh Mohebat、Reza Heydari
DOI:10.1016/j.cclet.2016.09.016
日期:2017.2
A green, convenient, high yielding and one-pot procedure for the synthesis of novel spiro[benzo[a]pyrano[2,3-c]phenazine] derivatives by domino multi-component condensation reaction between 2-hydroxynaphthalene-1,4-dione, benzene-1,2-diamines, ninhydrine, and malononitrile in the presence of a catalytic amount of 1,3-dimethyl-7H-purine-2,6-dione (theophylline) as an expedient, eco-friendly and reusable
通过2-羟基萘-1,4-之间多米诺骨牌多组分缩合反应合成新型螺[苯并[a]吡喃并[2,3-c]吩嗪]衍生物的绿色简便方法催化量的1,3-二甲基-7H-嘌呤-2,6-二酮(茶碱)的存在下,二酮,苯1,2-二胺,茚三酮和丙二腈作为一种方便,生态友好且可重复使用的固体碱催化剂在热,微波辐射和无溶剂条件下。该方法也已成功用于苯并[a]吡喃并[2,3-c]吩嗪的合成。