• Anil B. Chidrawar

A mixture of 8-(3-bromo-4,5-dimethoxyphenyl)-4-imino-2-(methylthio)-6-(4-nitrophenyl)-4H-pyrido[1,2-a] pyrimidine-3,9-dicarbonitrile and 2-chloroaniline in presence of anhydrous potassium carbonate (1-2 pinch) in DMF as solvent and reflux for about 6 to 7 hours to get 8-(3-bromo-4,5-dimethoxyphenyl)-2-((2-chlorophenyl) amino)-4-imino-6-(4-nitrophenyl)-4H-pyrido [1,2-a] pyrimidine-3, 9-dicarbonitrile. The structures for the synthesized compounds are assigned on the basis of IR, 1HNMR and Mass spectral studies.

Bis methyl thio methylene malononitrile, anhydrous Potassium Carbonate, DMF, 2-chloroaniline

"One pot Synthesis of Synthesis of substituted pyrido [1,2-a] pyrimidine-3,9-dicarbonitrile", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 4, page no.585-588, April-2023, Available :http://www.jetir.org/papers/JETIRFW06079.pdf

"One pot Synthesis of Synthesis of substituted pyrido [1,2-a] pyrimidine-3,9-dicarbonitrile", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 4, page no. pp585-588, April-2023, Available at : http://www.jetir.org/papers/JETIRFW06079.pdf