| Identification | Back Directory | [Name]
ETHYL 3,5-DIMETHYL-1H-4-PYRAZOLECARBOXYLATE | [CAS]
35691-93-1 | [Synonyms]
Ethyl 3,5-Dimethylpyrazole-4-carboxylate
3,5-Dimethyl-4-(ethoxycarbonyl)-1H-pyrazole
ETHYL 3,5-DIMETHYL-1H-4-PYRAZOLECARBOXYLATE
ETHYL 3,5-DIMETHYL-1H-PYRAZOLE-4-CARBOXYLATE
ETHYL 3,5-DIMETHYL-1H-PYRRAZOLE-4-CARBOXYLATE
3,5-dimethyl-4-pyrazolecarboxylicaciethylester
3,5-dimethylpyrazole-4-carboxylicacidethylester
3,5-DIMETHYL-1H-PYRAZOLE-4-CARBOXYLIC ACID ETHYL ESTER
1H-Pyrazole-4-carboxylic acid, 3,5-dimethyl-, ethyl ester | [Molecular Formula]
C8H12N2O2 | [MDL Number]
MFCD00159638 | [MOL File]
35691-93-1.mol | [Molecular Weight]
168.19 |
| Chemical Properties | Back Directory | [Melting point ]
66 °C | [Boiling point ]
284.8±35.0 °C(Predicted) | [density ]
1.136±0.06 g/cm3(Predicted) | [storage temp. ]
2-8°C(protect from light) | [form ]
solid | [pka]
12.82±0.50(Predicted) | [Appearance]
White to off-white Solid | [CAS DataBase Reference]
35691-93-1 |
| Hazard Information | Back Directory | [Synthesis]
General procedure for the synthesis of ethyl 3,5-dimethyl-1H-4-pyrazolecarboxylate from ethyl bisacetoacetate: To a solution of ethyl bisacetoacetate (4.6 g, 26.7 mmol) in ethanol (50 mL) was added hydrazine hydrochloride (1.8 g, 26.7 mmol). The reaction mixture was heated to reflux and kept for 2 hours. Upon completion of the reaction, the solvent was removed by distillation under reduced pressure. The resulting residue was washed with ethyl acetate to afford ethyl 3,5-dimethyl-1H-4-pyrazolecarboxylate as a colorless solid (3.1 g, 69% yield), which was pure enough to be used directly in the subsequent reaction. | [References]
[1] Patent: WO2014/49133, 2014, A1. Location in patent: Page/Page column 44
[2] Justus Liebigs Annalen der Chemie, 1894, vol. 279, p. 237
[3] Archiv der Pharmazie (Weinheim, Germany), 1926, p. 346
[4] Zeitschrift fur Physikalische Chemie, 2013, vol. 227, # 6-7, p. 841 - 856
[5] Journal of Organic Chemistry, 2018, vol. 83, # 12, p. 6454 - 6465 |
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