Facile 5-endo electrophilic cyclization of unsaturated amides with tBuOCl/I2
摘要:
5-Endo iodocyclization of various beta,gamma-unsaturated amides proceeded smoothly to give the corresponding conjugated imino-lactones exclusively in satisfactory yields with the use of (BuOCl)-Bu-1 and I-2 as the reagents, which proved to be much advantageous over the conventional I-2/NaHCO3. (c) 2006 Elsevier Ltd. All rights reserved.