反应详情

温度

0 °C

To a solution of (2-bromo-6-methyl-pyridin-4-yl)-methanol (0.300 g, 1.48 mmol) in dichloromethane (2.0 mL) was added DIPEA (776 μL, 4.45 mmol). The resulting mixture was cooled to 0° C. and methanesulfonyl chloride (120 μL, 1.56 mmol) was added. After 1 hour, the reaction mixture was diluted CH2Cl2 (20 mL) and washed with saturated aqueous ammonium chloride (3×10 mL), saturated aqueous sodium bicarbonate (10 mL) and brine (10 mL). The organic layer was dried over MgSO4, filtered and concentrated to afford methanesulfonic acid 2-bromo-6-methyl-pyridin-4-ylmethyl ester as crude product which was used in the next step without purification.

1. washwashed with saturated aqueous ammonium chloride (3×10 mL), saturated aqueous sodium bicarbonate (10 mL) and brine (10 mL)
2. dry with materialThe organic layer was dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated