Synthesis and x-ray study of novel azofurazan-annulated macrocyclic lactams
作者:Aleksei B. Sheremetev、Nataliya S. Aleksandrova、Dmitrii E. Dmitriev、Boris B. Averkiev、Mikhail Yu. Antipin
DOI:10.1002/jhet.5570420408
日期:2005.5
Reaction of 1,4-di-(3-aminofurazan-4-oyl)piperazine 4 with dibromoisocyanurate (DBI) affords azofurazan-annulated macrocyclic lactam 7; the X-ray structure of the macrocycle 7 is reported. The synthesis was started with 3-aminofurazan-4-carboxylic acid 1. A one-pot method for preparation of the amino acid was elaborated from commercially available cyanoaceticester. Amides of the acid have been prepared