Water → (4S,5R)-N-(t-butylaminocarbonyl)-2-(2,4dimethoxyphenyl)-4phenyl-5-oxazolidine-carboxylic acid potassium salt

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Reaction Steps

A 100 mg (0.23 mM) quantity the less polar isomer of (4S,5R)-N-(t-butylamino-carbonyl)-2-(2,4-dimethoxyphenyl)-4phenyl-5-oxazolidinecarboxylic acid methyl ester (Preparation 57, 5Ka) is stirred at room temperature under nitrogen in 3 mL MeOH. To this is added 0.1 mL water and 43 mg (0.31 mM) potassium carbonate. After 1 hour, TLC shows no starting material left. Store in freezer overnight. The next morning the solvent is evaporated to give (4S,5R)-N-(t-butylaminocarbonyl)-2-(2,4dimethoxyphenyl)-4phenyl-5-oxazolidine-carboxylic acid potassium salt (6Ka).

Provenance & Evidence