An efficient entry to pyrrolo[1,2-b]isoquinolines and related systems through Parham cyclisation
作者:Javier Ruiz、Ainhoa Ardeo、Roberto Ignacio、Nuria Sotomayor、Esther Lete
DOI:10.1016/j.tet.2004.10.105
日期:2005.3
Aryllithiums generated by lithium-iodine exchange undergo intramolecular cyclisation to give pyrrolo[1,2-b]isoquinolines, in high yields. The best results were obtained when Weinreb or morpholine amides were used as internal electrophiles. The procedure has been extended to the preparation of seven and eight membered rings, opening a route to benzazepine and benzazocine skeletons. (c) 2004 Elsevier Ltd. All rights reserved.