Original synthesis of 2-substituted-4,11-dimethoxy-1-(phenylsulfonyl)-2,3-dihydro-1H-naphtho[2,3-f]indole-5,10-diones using TDAE and Cu-catalyzed reaction strategy
摘要:
We report herein an original and rapid synthesis of 2-substituted-4,11-dimethoxy-1-(phenylsulfonyl)-2,3-dihydro-1H-naphtho[2,3-f]indole-5,10-diones by TDAE mediated synthesis of N-benzylsulfonamides followed by an intramolecular N-arylation using Cu-catalyzed system. (C) 2011 Elsevier Ltd. All rights reserved.
Cyanuric chloride is an inexpensive, efficient, and mild catalyst for the synthesis of N-sulfonyl imines by the reaction of sulfonamides with aryl aldehydes at 110 degrees C under solvent-free conditions. This method affords the N-sulfonyl imines in short reaction times, under solvent-free conditions, and in high yields.