Water → HCID 69015958, compound

To a solution of 3-methyl-5-aminoisoxazole (1.00 g, 10.2 mmol) and pyridine (0.97 ml, 12.2 mmol) in tetrahydrofuran (34 ml) was added 2,2,2-trichloroethyl chloroformate (1.69 ml, 12.2 mmol) under ice-cooling, and the mixture was stirred at room temperature for 3 hours and half. Water was poured to the reaction mixture, and the resulting solution was extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=7:3) to give 718 mg (26%) of the desired product as a solid.

1. temperaturecooling
2. extractionthe resulting solution was extracted with ethyl acetate
3. washThe extract was washed with water
4. dry with materialdried over anhydrous magnesium sulfate
5. distillationthe solvent was distilled off under reduced pressure
6. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=7:3)

ORD record

ord-ff0fdf3e9a304f4faa3eab87366e1451

Source dataset

uspto-grants-2010_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07851473B2