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ETHYL 3-CYANO-7-OXO-4,7-DIHYDROPYRAZOLO[1,5-A]PYRIMIDINE-6-CARBOXYLATE synthesis

3synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 2 steps
1: 46 percent / ethanol / 3 h / Heating
2: 67 percent / 0.17 h / 200 - 225 °C

References:

Nagahara;Kawano;Sasaoka;Ukawa;Hirama;Takada;Cottam;Robins [Journal of Heterocyclic Chemistry,1994,vol. 31,# 1,p. 239 - 243]