反应详情

To a solution of 4-bromo-2-chlorobenzyl alcohol (3.56 g) and anhydrous triethylamine (3 ml) in anhydrous dichloromethane (36 ml) was added dropwise methanesulfonyl chloride (1.4 ml) under a nitrogen flow under ice-cooling. The mixture was stirred for 1 hr and the reaction mixture was washed with water, saturated aqueous sodium hydrogen carbonate solution and saturated brine, and dried over anhydrous magnesium sulfate. The filtrate was concentrated to give 4-bromo-2-chloro-1-(methanesulfonyloxymethyl)benzene as a pale-brown solid (4.77 g).

1. temperaturecooling
2. washthe reaction mixture was washed with water, saturated aqueous sodium hydrogen carbonate solution and saturated brine
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationThe filtrate was concentrated