(2S)-1,1,2-Triphenyl-1,2-ethanediol → Esomeprazole

Participants

Reaction Steps

A suspension of omeprazole (250 mg, 0.72 mmol) and (S)-1,1,2-triphenyl-1,2-ethanediol (315 mg, 1.09 mmol) in toluene (8.8 ml) at ambient temperature was stirred for 18 h. The solid was filtered, was washed with toluene (2×2 ml) and was dried in vacuo to afford (S)-omeprazole.2[(S)-1,1,2-triphenyl-1,2-ethanediol] (320 mg, 96%, 94.6% e.e.) as a white powder.

Provenance & Evidence