Triethylamine → 1-(4-Chlorobenzyl)-3,3-dimethyl-2-hydroxy-2-methylsulphonyloxymethylcyclopentane

関与物質

反応手順

2.76 g (1.05 equivalents) methylsulphonyl chloride were added to a solution of 6.42 g (24 mmol) 1-(4-chlorobenzyl)-3,3-dimethyl-2-hydroxy-2-hydroxymethylcyclopentane prepared as described in Example 2 and 2.55 g (1.1 equivalents) triethylamine in 50 ml dichloromethane at 10°-15° C. The reaction mixture was kept at 10°-15° C. for a further 2 hours and then washed with 20 ml water, then 20 ml aqueous sodium bicarbonate solution, dried over anhydrous magnesium sulphate and flashed. Trituration with 60/80 petroleum gave 6.64 g 1-(4-chlorobenzyl)-3,3-dimethyl-2-hydroxy-2-methylsulphonyloxymethylcyclopentane as a white solid, m.pt. 113°-114° C. Yield: 80%.

情報源と証拠