反应详情

温度

0 °C

To a solution of 2-(4-tert-butylbenzylamino)-ethanol (1190 mg, 5.74 mmol) and triethylamine (3200 μl, 22.96 mmol) in DCM (15 ml) at −15° C. was added a solution of thionylchloride (544 μl, 7.46 mmol) in DCM (4 ml) over 10 min. The reaction mixture was stirred at −10° C. for 30 min, filtered and the filtrate was concentrated in vacuo. The residue was purified by flash column chromatography to give the desired compound (790 mg, 54%) as a white solid. To a mixture of 3-(4-tert-butylbenzyl)-[1,2,3]oxathiazolidine 2-oxide (790 mg, 3.12 mmol) in DCM (20 ml), acetonitrile (8 ml) and water (8 ml), at 0° C. was added NaIO4 (867 mg, 4.05 mmol) followed by RuO2 (2 mg). The reaction mixture was stirred at 0° C. for 2 h. Water was added and the phases were separated and the aqueous phase was extracted with ethyl acetate. The organic layers were combined washed with brine, dried (MgSO4), and concentrated in vacuo. The residue was then purified by flash column chromatography to give the desired product (640 mg, 76%) as an off white solid. MS (ISP) 287.0 (M+NH4)+.

1. customthe phases were separated
2. extractionthe aqueous phase was extracted with ethyl acetate
3. washThe organic layers were combined washed with brine
4. dry with materialdried (MgSO4)
5. concentrationconcentrated in vacuo
6. customThe residue was then purified by flash column chromatography