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| | 1H-Pyrazole-3-carboxylicacid,4-amino-,methylester(9CI) Basic information |
| | 1H-Pyrazole-3-carboxylicacid,4-amino-,methylester(9CI) Chemical Properties |
| Boiling point | 348.0±22.0 °C(Predicted) | | density | 1.395±0.06 g/cm3(Predicted) | | storage temp. | under inert gas (nitrogen or Argon) at 2–8 °C | | pka | 14.74±0.50(Predicted) | | Appearance | Brown to black Solid | | InChI | InChI=1S/C5H7N3O2/c1-10-5(9)4-3(6)2-7-8-4/h2H,6H2,1H3,(H,7,8) | | InChIKey | UYWFTIKDUFKYJS-UHFFFAOYSA-N | | SMILES | N1C=C(N)C(C(OC)=O)=N1 |
| | 1H-Pyrazole-3-carboxylicacid,4-amino-,methylester(9CI) Usage And Synthesis |
| Synthesis | Methyl 4-nitro-1H-pyrazole-3-carboxylate (9.63 g, 56.3 mmol) was used as starting material and 10% palladium/carbon catalyst (1.00 g) and methanol (150 mL) were added. The reaction was stirred under hydrogen atmosphere at room temperature for 16 hours. After completion of the reaction, the catalyst was removed by filtration and the filtrate was concentrated under reduced pressure to afford methyl 4-amino-1H-pyrazole-3-carboxylate (7.87 g, 99% yield). The product was characterized by 1H-NMR (CDCl3): δ 3.93 (3H, s, -OCH3), 4.08 (2H, brs, -NH2), 7.25 (1H, s, pyrazole ring-H). | | References | [1] Patent: US2009/156582, 2009, A1. Location in patent: Page/Page column 28
[2] Patent: EP1847531, 2007, A1. Location in patent: Page/Page column 40
[3] Patent: WO2006/70195, 2006, A1. Location in patent: Page/Page column 181-182; 188-189
[4] Patent: WO2006/77426, 2006, A2. Location in patent: Page/Page column 72-73; 97
[5] Patent: WO2006/77425, 2006, A1. Location in patent: Page/Page column 210-211 |
| | 1H-Pyrazole-3-carboxylicacid,4-amino-,methylester(9CI) Preparation Products And Raw materials |
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