One-pot synthesis of 1,3-diazaheterocycles via hydroxylamine hydrochloride activation of anthranilamide/phenylenediamines and DMF derivatives
作者:Baji Baba Shaik、Sachin Balaso Mohite、Sangh Partap、Vishal Kumar、Srinivas Vangara、Muhammad Dabai Bala、Parvesh Singh、Rajshekhar Karpoormath
DOI:10.1016/j.tet.2024.133866
日期:2024.3
The development of sustainable methods is highly desirable in synthetic organic chemistry. In this regard, we report hydroxylamine hydrochloride mediated, one-pot synthesis of 1,3-diazaheterocycles using anthranilamide or -phenylenediamine with amides transamidation under solvent free condition at 120–140 °C for 8–14 h. This method proceeds smoothly under metal- and oxidant-free conditions exhibited
有机合成化学中非常需要开发可持续方法。在这方面,我们报道了盐酸羟胺介导的1,3-二氮杂环化合物的一锅法合成,使用邻氨基苯甲酰胺或邻苯二胺,在无溶剂条件下于120-140℃下进行酰胺转酰胺基化8-14小时。该方法在无金属和氧化剂的条件下顺利进行,表现出广泛的底物范围,涉及二胺衍生物和酰胺,以良好至优异的产率产生相应的 4(3)-喹唑啉酮(和苯并咪唑 (&)(~47 个例子)) (56–96 %)。作为一种高效且环保的方式获得多种 4(3)-喹唑啉酮和苯并咪唑,该方法的合成实用性已通过克级操作得到证明,收率 >90 %。