Simple and Efficient Synthesis of 2‐Oxo‐2H‐Pyrido[1,2‐a]Pyrimidin‐3(4H)‐Ylidene)Acetic Acid and Its Rearrangement in Presence of Acid Media |
| |
| Authors: | Sharulatha Venugopal Sivakamasundari Sundaram |
| |
| Affiliation: | Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India |
| |
| Abstract: | A highly efficient one‐pot simple synthesis of 2‐[2‐oxo‐2H‐pyrido[1,2‐a]pyridmidn‐3(4H)‐ylidene)]acetic acid is described. The rearrangement of 2‐[2‐oxo‐2H‐pyrido[1,2‐a]pyridmidn‐3(4H)‐ylidene)]acetic acid in the presence of polyphosphoric acid (PPA) yielded a seven‐membered diazepine with decarboxylation and ring expansion. |
| |
| Keywords: | |
|
|
