反应详情

To a stirred suspension of sodium hydride (0.25 g, 6.3 mmol) in anhydrous THF (20 mL) is added 3-(t-butyl-dimethyl-silanyloxy)-benzenethiol (1.3 g, 5.22 mmol) at RT. After 10 min, the title A compound, (R)-1-chlorocarbonyl-pyrrolidine-2-carboxylic acid ethyl ester (1.1 g, 5.22 mmol) is added and the reaction is stirred for 24 h. The reaction mixture is diluted with ethyl acetate, washed with water and brine, dried over anhydrous magnesium sulfate and concentrated at reduced pressure. The crude product is purified on a Biotage 40M column using 25% ethyl acetate in hexane to yield (R)-1-[3-(t-butyl-dimethyl-silanyloxy)-phenyl-sulfanylcarbonyl]-pyrrolidine-2-carboxylic acid ethyl ester as a clear oil.

1. washwashed with water and brine
2. dry with materialdried over anhydrous magnesium sulfate
3. concentrationconcentrated at reduced pressure
4. customThe crude product is purified on a Biotage 40M column