Efficient iodine catalyzed chemoselective synthesis of aminals—an access to N,N-acetals by the addition of lactams to N-acyl imines
摘要:
A highly efficient protocol has been developed for the synthesis of aminals from gamma-butyrolactam and benzaldehyde using iodine as Lewis acid catalyst. The attack of gamma-butyrolactam nucleophile to intermediate N-acyliminium ion was more favorable, when aryl aldehyde bears the electron donating group (EDG). Iodine plays a key role in these reaction transformations. This current mild protocol is environmentally benign and cost-effective method for the synthesis of industrially and pharmaceutically useful scaffolds. (C)2013 Elsevier Ltd. All rights reserved.
Shipov, A. G.; Zheltonogova, E. A.; Kobzareva, V. P., Journal of general chemistry of the USSR, 1991, vol. 61, # 10, p. 2142 - 2150
作者:Shipov, A. G.、Zheltonogova, E. A.、Kobzareva, V. P.、Orlova, N. A.、Baukov, Yu. I.
DOI:——
日期:——
Efficient iodine catalyzed chemoselective synthesis of aminals—an access to N,N-acetals by the addition of lactams to N-acyl imines
作者:Gunasekar Ramachandran、Kulathu I. Sathiyanarayanan
DOI:10.1016/j.tetlet.2013.10.009
日期:2013.12
A highly efficient protocol has been developed for the synthesis of aminals from gamma-butyrolactam and benzaldehyde using iodine as Lewis acid catalyst. The attack of gamma-butyrolactam nucleophile to intermediate N-acyliminium ion was more favorable, when aryl aldehyde bears the electron donating group (EDG). Iodine plays a key role in these reaction transformations. This current mild protocol is environmentally benign and cost-effective method for the synthesis of industrially and pharmaceutically useful scaffolds. (C)2013 Elsevier Ltd. All rights reserved.