Lithium Hydroxide → {(5s,6s)-5-(Tert-butoxycarbonyl)-6-[(3-phenylpyrrolidin-1-yl)carbonyl]piperidin-3-yl}acetic acid

Participants

Reaction Steps

A solution of tert-butyl(2S,3S)-5-(2-methoxy-2-oxoethyl)-2-[(3-phenylpyrrolidin-1-yl)carbonyl]piperidine-3-carboxylate in THF (3 mL) was cooled to 0° C. prior to the addition of lithium hydroxide (7 mg, 0.16 mmol). After warming to ambient temperature, the reaction mixture was stirred overnight. The volatiles were removed in-vacuo to afford 60 mg (87%) of {(5S,6S)-5-(tert-butoxycarbonyl)-6-[(3-phenylpyrrolidin-1-yl)carbonyl]piperidin-3-yl}acetic acid as an off-white solid that was used without neutralization and purification in the following coupling reaction. MS (ESI): 417 (M+H+).

Provenance & Evidence