Journal of the Chemical Society. Perkin transactions I p. 331 - 335 (1981)
Update date:2022-08-02
Topics:
Greco, Claude V.
Gala, Kanti J.
Treatment of 2-alkylaminopyrimidines (1) and (2) with ethoxycarbonyl isocyanate gave the acyclic urea derivatives, namely, 3-alkyl-1-ethyloxycarbonyl-3-(2-pyrimidyl)ureas (3) and (4), which cyclized to 1-alkyl-4-oxopyrimido<1,2-a>-s-triazin-1-ium-2-olates
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