Unexpected reduction of the nitro group in (3-nitrophenyl)-1,2,4-triazines during their aza-Diels-Alder reaction with 1-morpholinocyclopentene

Abstract

Unexpected reduction of the nitro group to the amino one during aza-Diels-Alder reaction between (3-nitrophenyl)-1,2,4-triazines and 1-morpholinocyclopentene (neat, 200 C, argon) occurred to furnish 4-(3-aminophenyl)-6,7-dihydro-5H-cyclopenta[c]pyridines. © 2013 Mendeleev Communications. All rights reserved.