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ChemicalBook CAS DataBase List 1H-Pyrazole-3-carboxylicacid,1-methyl-5-propyl-(9CI)

1H-Pyrazole-3-carboxylicacid,1-methyl-5-propyl-(9CI) synthesis

3synthesis methods
-

Yield:139755-99-0 54% ,247583-70-6 40%

Reaction Conditions:

Stage #1: ethyl 3-butyrylpyruvate;methylhydrazine in dichloromethane;Heating;
Stage #2: with sodium hydroxide in water; for 4 h;Heating;

References:

Kopp;Lancelot;Dallemagne;Rault [Journal of Heterocyclic Chemistry,2001,vol. 38,# 5,p. 1045 - 1050]

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