Ammonia methanol → (R)-tert-butyl 3-((R)-(2-amino-2-oxoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate

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Reaction Steps

(R)-tert-Butyl 3-((R)-(3-chlorophenyl)(2-ethoxy-2-oxoethoxy)methyl)-piperidine-1-carboxylate (0.971 g, 2.36 mmol) was dissolved in 7 M NH3/MeOH (20 mL), and stirred overnight at room temperature. The solvent was removed under reduced pressure to give (R)-tert-butyl 3-((R)-(2-amino-2-oxoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate (902 mg, 100%), which was used for the next step without further purification. MS ESI+ve m/z 383 (M+H)+.

Provenance & Evidence