HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1586159Generated: October 27, 2026
1,2-Dimethoxyethane → N-(1-ethylpyrazol-5-yl)-4-carboxyanthranilic acid
https://huagongshe.com/reaction/1586159
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 1,2-Dimethoxyethane | HCID 8071 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | Bromoterephthalic acid | HCID 68513 | — |
| Reactant | 1-Ethyl-1H-pyrazol-5-amine | HCID 337310 | — |
| Catalyst | Cupric acetate | HCID 8895 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Solvent | Water | HCID 962 | — |
| Product | N-(1-ethylpyrazol-5-yl)-4-carboxyanthranilic acid | HCID 21217714 | 45.4% |
Reaction Steps
A mixture of 2-bromoterephthalic acid (4.8 g, 0.02 mol), DME (50 ml), Cu(OAc)2 (0.2 g), 5-amino-1-ethylpyrazole (2.22 g, 0.02 mol) and K2CO3 (2.71 g, 0.02 mol) is heated at 135° C. overnight, then at reflux overnight. The reaction mixture is poured into water, acidified with acetic acid and the precipitate which forms is collected by filtration and dried to afford 2.5 g of N-(1-ethylpyrazol-5-yl)-4-carboxyanthranilic acid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US05942520 |
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| Source dataset | uspto-grants-1999_08 |
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| ORD ID | ord-5e04c109ec454e6786880bb6819313a5 |
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| Source note | uspto-grants-1999_08 |
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