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Substituted 2-aminonicotinamides in the synthesis of pyrido[2,3-d] pyrimidin-4(1H)-ones, 2,3-dihydropyrido- [2,3-d]pyrimidin-4(1H)-ones, and 11b,12-dihydropyrido- [2′,3′:4,5]pyrimido[2,1-a]isoindole-5,7-diones
Sidorova,Kostenko,Arustamova,Kaigorodova,Konyushkin
, p. 294 - 301 (2011/12/04)
The reactions of 2-aminonicotinamides with triethyl orthoformate, carboxylic acids chlorides, aldehydes, and 2-formylbenzoic acid were studied. As a result pyrido[2,3-d]pyrimidin-4(1H)-ones, 2,3-dihydropyrido[2,3-d]pyrimidin- 4(1H)-ones, and 5,7,11b,12-te