反应详情

Aliquots of 2-benzoyloxyacetaldehyde dimethyl acetal (50.0 g) prepared according to Example 1,2-mercaptoethanol (20.4 g), p-toluenesulfonic acid monohydrate (0.90 g) and toluene (250 mL) were placed in a three-neck flask, followed by heating. By-produced methanol was distilled off with the solvent. After distilling off about 150 mL, the reaction mixture was cooled to room temperature, was washed with a saturated aqueous sodium hydrogen carbonate solution and water and was dried over anhydrous sodium carbonate. After filtration and vacuum distillation at 144-147° C. and at 0.60 mmHg, the target compound (54.9 g) was obtained in a yield of 100%.

1. customwere placed in a three-neck flask
2. temperatureby heating
3. distillationBy-produced methanol was distilled off with the solvent
4. distillationAfter distilling off about 150 mL
5. washwas washed with a saturated aqueous sodium hydrogen carbonate solution and water
6. dry with materialwas dried over anhydrous sodium carbonate
7. filtrationAfter filtration and vacuum distillation at 144-147° C.