反应详情

Triethylamine (28.3 ml) is added to a solution of methyl 2-(2-hydroxybutylthio)acetate (6.00 g, Reference compound No. 35-1) in dimethyl sulfoxide (180 ml). A sulfur trioxide-pyridine complex (20.0 g) is added to the mixture, and the whole is stirred for one hour. Water is added to the reaction mixture, and the whole is stirred for 20 minutes and extracted with ethyl acetate. The extract is washed with water, 1 N hydrochloric acid and saturated brine successively and dried over anhydrous magnesium sulfate. The extract is concentrated under reduced pressure, and the resulting residue is purified by silica gel column chromatography to give the titled reference compound (5.93 g).

1. additionA sulfur trioxide-pyridine complex (20.0 g) is added to the mixture
2. stirringthe whole is stirred for 20 minutes
3. extractionextracted with ethyl acetate
4. washThe extract is washed with water, 1 N hydrochloric acid and saturated brine successively
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationThe extract is concentrated under reduced pressure
7. customthe resulting residue is purified by silica gel column chromatography