Isopropyl iodide → (S)-methyl 2-(tert-butoxycarbonylamino)-3-(4-isopropoxyphenyl)propanoate

Participants

Reaction Conditions

Reaction Steps

Isopropyl iodide (680 uL, 6.8 mmol) was added to a mixture of methyl (2S)-2-[(tert-butoxycarbonyl)amino]-3-(4-hydroxyphenyl)propanoate (1 g, 3 mmol) (Step 1) and potassium carbonate (940 mg, 6.8 mmol) in acetonitrile (20 mL). The reaction was heated at 60° C. overnight. The reaction was partitioned between water and ethyl acetate. The organic phase was washed with saturated brine, dried over magnesium sulfate, filtered and concentrated under reduced pressure to give the crude product, (S)-methyl 2-(tert-butoxycarbonylamino)-3-(4-isopropoxyphenyl)propanoate (1 g, 90%) as a white solid. Analytical LCMS (M+H-Boc)+: m/z=237.9.

Provenance & Evidence