Route to pyrrolo[1,2-a]quinoxalines via a furan ring opening-pyrrole ring closure sequence
作者:Elena Y. Zelina、Tatyana A. Nevolina、Ludmila N. Sorotskaja、Dmitry A. Skvortsov、Igor V. Trushkov、Maxim G. Uchuskin
DOI:10.1016/j.tetlet.2019.151532
日期:2020.2
A method was developed for the synthesis of pyrrolo[1,2-a]quinoxalines based on an acid-promoted furanring opening of readily accessible N-(furan-2-ylmethyl)-2-nitroanilines or their heterocyclic analogues followed by a key reductive Paal-Knorr cyclization of the corresponding nitro-1,4-diketones.