

PECULIARITIES OF CYCLIZATION OF 2-(2-OXO-2-PHENYLETHYLIDENE)- 2,3-DIHYDROPYRIMIDIN-4(1Н)-ONE WITH ETHYL CYANOACETATE

Abstract
The reaction of 2-(2-oxo-2-phenylethylidene)-2,3-dihydropyrimidin-4(1H)-ones and ethyl cyanoacetate leads to the formation of 4hydroxy-2,10-dioxo-5-phenyl-1,10-dihydro-2H-pyrimido[1,2-a][1,8]naphthyridine-3-carbonitriles.
Keywords
3-cyanopyridin-2(1Н)-ones, ethyl cyanoacetate, pyrimidine, pyrimido[1,2-a][1,8]naphthyridine.
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv