2-Chloro-5-methyl-1,3-benzoxazole → benzyl(2S)-1-(5-methyl-1,3-benzoxazol-2-yl)-2-piperidinecarboxylate

Participants

Reaction Steps

The title compound was prepared by a similar method to Preparation 2 from 2-chloro-5-methyl-1,3-benzoxazole [see J.Med.Chem, 1988, 31, 1719-1728] and (2S)-2-[(benzyloxy)carbonyl]piperidinium chloride [see EP 530167 A1 930303]. The crude product was purified by column chromatography on silica gel eluting with a solvent gradient of 90:10 changing to 70:30, by volume, hexane:ethyl acetate to afford benzyl(2S)-1-(5-methyl-1,3-benzoxazol-2-yl)-2-piperidinecarboxylate as an oil.

Provenance & Evidence