Triethylamine → ethyl (2S)-2-methylsulfonyloxypropanoate

Participants

Reaction Conditions

Reaction Steps

To a solution of (L)-ethyl lactate (124 g, 1.05 mol) and triethyl amine (126 g, 1.25 mol) in toluene at 10-15° C. was added methanesulfonyl chloride (124 g, 1.08 mol) dropwise for about 2 hours. The mixture was allowed to warm to about 20° C. and the solid was filtered off. The solution was washed with water and dried, concentrated to afford the product (S)-ethyl 2-(methylsulfonyloxy)propanoate (199 g, yield 96.7%).

Provenance & Evidence