反应详情

(4,4-Difluorocyclohexyl)methanol (0.7 g, 4.11 mmole) was stirred in CH2Cl2 (5 ml) and cooled in an ice bath. TEA (0.499 g, 4.93 mmoles) was added followed by methanesulfonyl chloride (0.518 g, 4.52 mmoles). Stirring was continued overnight while allowing to warm to room temp. 1.0 N HCl (30 ml) and CH2Cl2 (30 ml) was added and stirred for 5 min. The organic layer was dried over Na2SO4 and evaporated giving (4,4-difluorocyclohexyl)methyl methanesulfonate (142) as an oil. Yield (0.92 g, 98%): 1H NMR (400 MHz, DMSO-d6) δ 4.06 (d, J=6.4 Hz, 2H), 3.14 (s, 3H), 2.04-1.95 (m, 2H), 1.88-1.70 (m, 5H), 1.29-1.19 (m, 2H).

1. temperaturecooled in an ice bath
2. stirringstirred for 5 min
3. dry with materialThe organic layer was dried over Na2SO4
4. customevaporated