Triethylamine → (R)-(-)-3,6-Dihydro-4-[4-[5-[[(methylsulfonyl)oxy]methyl]-2-oxo-3-oxazolidinyl]phenyl]-1(2 H)-pyridinecarboxylic acid phenylmethyl ester

Participants

Reaction Conditions

Reaction Steps

A solution of (R)-(−)-3,6-dihydro-4-[4-[5-(hydroxymethyl)-2-oxo-3-oxazolidinyl]phenyl]-1(2H)-pyridinecarboxylic acid phenylmethyl ester (EXAMPLE 17, Step 3, 970 mg) and triethylamine (0.50 mL) in dry methylene chloride (9.5 mL) at 0° C. under N2 is treated with methanesulfonyl chloride (0.20 mL) dropwise. The resulting mixture is stirred at 0° C. for one hour, diluted with methylene chloride (40 mL), washed with water (10 mL), saturated aqueous sodium bicarbonate (10 mL) and saline (10 mL), dried over anhydrous sodium sulfate and concentrated under reduced pressure to give the title compound, mp 166-168° C.

Provenance & Evidence