Sharulatha Venugopal, S. Sundaram
May 1, 2016
Citations
0
Influential Citations
3
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
A highly efficient one-pot simple synthesis of 2-[2-oxo-2H-pyrido[1,2-a]pyridmidin-3(4H)-ylidene)]acetic acid is described. The rearrangement of 2-[2-oxo-2H-pyrido[1,2-a]pyridmidin-3(4H)-ylidene)]acetic acid in the presence of polyphosphoric acid (PPA) yielded a seven-membered diazepine with decarboxylation and ring expansion.