HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 632765Generated: October 30, 2026
Triethylamine → N-(4-bromo-1-methyl-1H-pyrazol-3-yl)-4-chlorobutanamide
https://huagongshe.com/reaction/632765
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Ammonium Chloride | HCID 25517 | — |
| Reactant | 4-Chlorobutyryl chloride | HCID 78370 | — |
| Reactant | 4-bromo-1-methyl-1H-pyrazol-3-amine | HCID 2735283 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | N-(4-bromo-1-methyl-1H-pyrazol-3-yl)-4-chlorobutanamide | HCID 118061399 | — |
Reaction Steps
To a solution of 4-bromo-1-methyl-1H-pyrazol-3-amine (310 mg) and triethylamine (0.37 mL) in THF (8.8 mL) was added 4-chlorobutanoyl chloride (0.22 mL) under ice-cooling, and the mixture was stirred at 0° C. for 30 min. To the reaction mixture was added saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to give the title compound (456 mg).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09321757B2 |
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| Source dataset | uspto-grants-2016_04 |
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| ORD ID | ord-1d3631e8debd4ebaa2d974ef803fcf94 |
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| Source note | uspto-grants-2016_04 |
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