HuagongsheHuagongshe Chemistry Print Report · For research reference only
Triethylamine → N-methoxy-N-methyl-2-oxo-1,2-dihydropyridine-4-carboxamide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide | HCID 15908 | — |
| Reactant | 1-Hydroxybenzotriazole | HCID 75771 | — |
| Reactant | Methanamine, N-methoxy-, hydrochloride (1:1) | HCID 81138 | — |
| Reactant | 2-Hydroxyisonicotinic Acid | HCID 280756 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | N-methoxy-N-methyl-2-oxo-1,2-dihydropyridine-4-carboxamide | HCID 89655466 | 60% |
Reaction Steps
To a suspension of 2-oxo-1,2-dihydropyridine-4-carboxylic acid (8.0 g, 1.0 eq), EDCI (13.2 g, 1.2 eq) and HOBt (9.3 g, 1.2 eq) in 150 mL CH2Cl2 were added N-methoxymethanamine hydrochloride (6.8 g, 1.2 eq) and Et3N (26.2 g, 4.5 eq). The reaction mixture was stirred at rt overnight, concentrated, and purified by column chromatography to give the desired product (6.3, 60% yield). 1H NMR (400 MHz, CDCl3) δ 12.79 (s, 1H), 7.40 (d, J=6.8 Hz, 1H), 6.77 (s, 1H), 6.43 (dd, J=6.8 Hz, 1.6 Hz, 1H), 3.62 (s, 3H), 3.34 (s, 3H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US09309211B2 |
| Source dataset | uspto-grants-2016_04 |
| ORD ID | ord-cbd070787a61443098960d8247421e50 |
| Source note | uspto-grants-2016_04 |