Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Pyridine | HCID 1049 | — |
| Reactant | Trifluoroacetic anhydride | HCID 9845 | — |
| Reactant | HCID 22636528 | HCID 22636528 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 22636441 | HCID 22636441 | 79.4% |
Reaction Steps
3-Methoxy-5-isoxazolecarboxamide (J. Chem Soc. 1968, 172) (1.0 g, 7.0 mmol) was dissolved in dichloromethane (20 mL), cooled to 0° C. then pyridine (1.1 mL, 14 mmol) and trifluoroacetic anhydride (1.0 mL, 7.4 mmol) were added and the reaction was stirred at 0° C. for 40 minutes. The mixture was diluted with dichloromethane (10 mL) and then washed with 5% aqueous citric acid solution (3×20 mL). The combined organic extracts were dried (Na2SO4), and the solvent was removed in vacuo to give the title compound as a yellow oil (0.69 g).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US06821972B2 |
|---|
| Source dataset | uspto-grants-2004_11 |
|---|
| ORD ID | ord-3d2cd1918c7f44d0942c5b4072ee5e77 |
|---|
| Source note | uspto-grants-2004_11 |
|---|