Bro̷nsted Acid-Catalyzed [5+1] and [4+1] Annulation of Cyclic Anhydrides with <i>o</i>-Alkynylanilines to Construct Fused-N-Heterocycles
作者:Aranya Das、Sk Ajarul、Sudipto Debnath、Poulami Hota、Dilip K. Maiti
DOI:10.1021/acs.joc.3c01525
日期:2023.11.3
valuable isoindolo/pyrido/pyrrolo-quinolinediones and isoindolo-indolones is demonstrated through annulation reactions of cyclic anhydrides or o-formylbenzoates with o-alkynylanilines. The metal-free Bro̷nsted acid-mediated new [5+1] and [4+1] fused-cyclization is an operationally simple, highly regioselective, atom economical, high yielding, sustainable, and catalytically efficient approach.
通过环酸酐或邻甲酰基苯甲酸酯与邻炔基苯胺的成环反应,证明了前所未有的对-TsOH和MsOH催化构建有价值的异吲哚/吡啶并/吡咯并喹啉二酮和异吲哚并吲哚酮。无金属布朗斯台德酸介导的新型[5+1]和[4+1]稠合环化是一种操作简单、高度区域选择性、原子经济、高产率、可持续且催化高效的方法。