A Route to (Het)arene-Annulated Pyrrolo[1,2-<i>d</i>][1,4]diazepines via the Expanded Intramolecular Paal–Knorr Reaction: Nitro Group and Furan Ring as Equivalents of Amino Group and 1,4-Diketone
作者:Elena Y. Zelina、Tatyana A. Nevolina、Dmitry A. Skvortsov、Igor V. Trushkov、Maxim G. Uchuskin
DOI:10.1021/acs.joc.9b01925
日期:2019.11.1
A straightforward protocol toward pharmacologically relevant (het)areno[x,y-b]pyrrolo[1,2-d][1,4]diazepines in good to high yields has been described. The designed approach consists of an acid-promoted furan ring opening in easily accessible N-(2-furylethyl)-2-nitroanilines or their heterocyclic analogues followed by the reductive cyclization of the corresponding nitro-1,4-diketones.