反应详情

A 1M solution of tetrabutylammonium fluoride in tetrahydrofuran (5.7 mL) is added to [3-chloro-4(1-hydroxy-ethyl)-phenyl]-carbamic acid 2-trimethylsilanyl-ethyl ester (0.5 g) and the mixture is stirred at room temperature for approximately 3.5 hours. The solution is then concentrated under reduced pressure, dissolved in a 1:1 mixture of ethyl acetate and hexanes, washed successively with water then saturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate. Removal of the solvent under reduced pressure followed by chromatography over silica gel (40% ethyl acetate in hexanes is used as the eluant) provides the product as an amber oil.

1. concentrationThe solution is then concentrated under reduced pressure
2. dissolutiondissolved in a 1:1 mixture of ethyl acetate and hexanes
3. washwashed successively with water
4. dry with materialsaturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate
5. customRemoval of the solvent under reduced pressure