HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 466688Generated: October 25, 2026
Butyric Acid → 5-Butyramido-2-propylimidazo[4,5-b]pyridine
https://huagongshe.com/reaction/466688
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Butyric Acid | HCID 264 | — |
| Reactant | Dichloromethane | HCID 6344 | — |
| Reactant | 2,6-Diamino-3-nitropyridine | HCID 319998 | — |
| Catalyst | Palladium | HCID 23938 | — |
| Solvent | Methanol | HCID 887 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Ammonium Hydroxide | HCID 14923 | — |
| Product | 5-Butyramido-2-propylimidazo[4,5-b]pyridine | HCID 22407381 | 49.1% |
Reaction Steps
A mixture of 2,6-diamino-3-nitropyridine (878 mg, 5.7 mmol) and Pd-C (10%, 100 mg) in MeOH (100 mL) was stirred under 1 atm. H2 for 16 hours. The mixture (containing the air sensitive triamine) was filtered, evaporated, and to this flask was added polyphosphoric acid (15 mL) and butyric acid (1.05 mL, 11.5 mmol). This mixture was heated to 80° C. for 5 hours, cooled to room temperature, diluted with water and neutralized with concentrated NH4OH. Extractive workup (CH2Cl2) gave 345 mg of 5-(butyramido)-2-propylimidazo[4,5-b]pyridine.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US05157026 |
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| Source dataset | uspto-grants-1992_10 |
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| ORD ID | ord-456bbe93220848599009a8d9c9554856 |
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| Source note | uspto-grants-1992_10 |
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