1H-Pyrazole-4-carboxylicacid,3-cyano-,methylester(9CI) synthesis

1synthesis methods

Yield:70910-18-8 37% ，105020-37-9 6% ，105020-45-9 31%

Reaction Conditions:

in tetrahydrofuran at 0; for 3 h;

References:

Huisgen, Rolf;Mitra, Abhijit;Moran, Joaquin Rodriguez [Heterocycles,1986,vol. 24,# 9,p. 2429 - 2436]

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