反应详情

N-(4-bromo-3-methyl-5-isoxazolyl)-2,5-dimethyl-furan-3-sulfonamide was prepared by the method of Example 41 with 4-bromo-3-methyl5-amino-isoxazole (2.0 mmoles, 0.35 g), NaH (5.0 mmoles, 200 mg), 2,5-dimethyl-furan-3-sulfonylchloride (2.4 mmoles, 0.47 g) and THF (9 ml). Flash chromatography (5% methanol/chloroform) followed by recrystallization from chloroform and hexanes provided 0.21 g (31%) of a light brown solid, m.p. 85.5°-87° C.

1. customFlash chromatography (5% methanol/chloroform) followed by recrystallization from chloroform and hexanes