Rastogi, Roopa R. published the artcileNovel method for the synthesis of substituted and fused 3-cyano-4-(methylmercapto)-2(1H)-pyridones using α-oxoketene S,S-diacetals, Synthetic Route of 57663-05-5, the publication is Journal of the Chemical Society, Chemical Communications (1975), 645, database is CAplus.
RCOCH:C(SMe)2 (R = Me, p-MeC6H4, 3-pyridyl) with cyanoacetamide and Me2CHONa in refluxing Me2CHOH gave 65-85% pyridone I. Similar reaction of the cycloalkanones II (n = 1 and 2) and III gave 77% pyrindinone IV (n = 1), 76% quinolinone IV (n = 2), and 65% benzoquinoline V.
Journal of the Chemical Society, Chemical Communications published new progress about 57663-05-5. 57663-05-5 belongs to nitriles-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Tetrahydropyrimidins, name is 6-Methyl-4-(methylthio)-2-oxo-1,2-dihydropyridine-3-carbonitrile, and the molecular formula is C8H8N2OS, Synthetic Route of 57663-05-5.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts