Hydrochloric Acid → HCID 178502451, compound

Participants

Reaction Steps

To a solution of (2S)-2-(methoxycarbonylamino)-3-methyl-butanoic acid (644.5 mg, 3.68 mmol) in DMF (25 mL) at 0° C. is added HATU (1.4 g, 3.68 mmol), DIPEA (2.5 mL, 14.57 mmol) followed by 4-iodo-2-[(2S,4S)-4-methylpyrrolidin-2-yl]-1H-imidazole as HCl salt (1.28 g, 3.64 mmol). The reaction mixture is stirred at rt for 20 hours, diluted with EtOAc and H2O. The organic phase is separated, washed with H2O, dried over Na2SO4, filtered and concentrated to dryness. The residue is purified by flash column chromatography on silica gel (0 to 100% EtOAC/Hexane) to afford methyl N-[(1S)-1-[(2S,4S)-2-(4-iodo-1H-imidazol-2-yl)-4-methyl-pyrrolidine-1-carbonyl]-2-methyl-propyl]carbamate (1.3 g, 87.3%) as a white solid.

Provenance & Evidence