Novel syntheses of pyrido[1,2-a]pyrimidin-2-ones, 2H-quinolizin-2-ones, pyrido[1,2-a]quinolin-3-ones, and thiazolo[3,2-a]pyrimidin-7-ones - Katritzky, Alan R.; Rogers, James W.; Witek, Rachel M.; Nair, Satheesh K. (ARKIVOC, 2004)
doi: 10.3998/ark.5550190.0005.808