ethyl 5-Methyl-3-oxo-2,3-dihydro-1H-pyrazole-4-carboxylate synthesis

5synthesis methods

Product Name:ethyl 5-Methyl-3-oxo-2,3-dihydro-1H-pyrazole-4-carboxylate
CAS Number:125732-40-3
Molecular formula:C7H10N2O3
Molecular Weight:170.17

105-53-3
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ethyl 5-Methyl-3-oxo-2,3-dihydro-1H-pyrazole-4-carboxylate

125732-40-3
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Yield:-

Steps:

Multi-step reaction with 2 steps
1.1: tetrachloromethane; magnesium / toluene; ethanol / 1.5 h / 10 - 85 °C
1.2: 72.5 h / 0 - 35 °C
1.3: 0 °C
2.1: hydrazine hydrochloride / ethanol / 10 h / 85 °C

References:

US2011/86898,2011,A1

570-08-1
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125732-40-3
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References