反应详情

To the stirred solution of 6-azido-4-(4-bromo-2-fluoro-phenylamino)-6-chloro-pyridazine-3-carboxylic acid tert-butyl ester (122 mg, 0.30 mmol) in 5 ml of mixed solvents (3:1 v/v, dichloromethane/acetic acid) is added zinc powder (98 mg, 1.5 mmol) at room temperature. After three hours, the reaction mixture is poured into ethyl acetate (50 ml). The organic layer is washed with water, saturated NaHCO3 (30 ml×3) and saturated NaCl (30 ml×3). The organic layer is dried over Na2SO4, and concentrated. The residue is purified by flash column chromatography to provide the desired product.

1. washThe organic layer is washed with water, saturated NaHCO3 (30 ml×3) and saturated NaCl (30 ml×3)
2. dry with materialThe organic layer is dried over Na2SO4
3. concentrationconcentrated
4. customThe residue is purified by flash column chromatography