(2R)-2-[(tert-Butoxycarbonyl)amino]-3-(3'-chloro-4'-fluoro[1,1'-biphenyl]-4-yl)propanoic acid → HCID 68867928, compound

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Reaction Steps

(2R)-tert-Butoxycarbonylamino-3-(3′-chloro-4′-fluoro-biphenyl-4-yl)-propionic acid (2.0 g, 5.07 mmol) was dissolved in 15 mL anhydrous THF and BH3:THF (11 mL, 11.0 mmol, 1M solution in THF) was added dropwise at 0° C. and stirred for 10 h at room temperature. Excess BH3:THF was quenched by adding methanol (˜1 mL) at 0° C. Solvent was removed under vacuum and residue was dissolved in EtOAc (20 mL) and washed with water, brine and dried over Na2SO4. Solvent was removed under vacuum and silica gel column chromatography (CH2Cl2:MeOH) gave (R)-[2-(3′-chloro-4′-fluoro-biphenyl-4-yl)-1-hydroxymethyl-ethyl]-carbamic acid tert-butyl ester as white solid (1.6 g).

Provenance & Evidence