反应详情

To a solution of 1-benzyloxy-2,2-difluoro-4-hydroxybutane (50 g, 0.231 moles) and dry pyridine (100 mL) in dichloromethane cooled in an ice bath, methanesulfonyl chloride (26.52 g, 0.232 moles) in dichloromethane (100 mL) is slowly added. After stirring at room temperature overnight, the mixture is washed with 2N HCl (2×1 L) and twice with water. Drying and subsequent evaporation of the solvent yields 1-benzyloxy-2,2-difluoro-4-methanesulfonyloxybutane as a yellow oil: 63.44 g (93%).

1. washthe mixture is washed with 2N HCl (2×1 L) and twice with water
2. customDrying
3. customsubsequent evaporation of the solvent