反应详情

A solution of 0.5 g (1.639 mmol) of (RS)-3-[4-(trans-4-hydroxy-cyclohexyl)-phenyl]-5-methoxymethyl-oxazolidin-2-one in 20 ml of methylene chloride and 5 ml of pyridine was treated dropwise with a solution of 0.95 ml (8.195 mmol) of benzoyl chloride in 10 ml of methylene chloride and stirred at room temperature for a further 3 hours. The reaction mixture was poured into ice-water, made acid with 3N hydrochloric acid and extracted with methylene chloride. The organic phase was washed with wate, dried over magnesium sulfate and the solvent was distilled off. The benzoate crystallized upon treatment with t-butyl methyl ether. There was obtained 0.52 g (77%) of benzoic acid (RS)-trans-4-[4-(5-methoxymethyl-2-oxo-oxazolidin-3-yl)-phenyl]-cyclohexyl ester. M.p.: 104°-105°.

1. extractionextracted with methylene chloride
2. washThe organic phase was washed with wate
3. dry with materialdried over magnesium sulfate
4. distillationthe solvent was distilled off
5. customThe benzoate crystallized upon treatment with t-butyl methyl ether