Trifluoroacetic acid → HCID 86699098, compound

Participants

Reaction Steps

tert-Butyl((1S,2R)-3-amino-1-(6-(tert-butyl)imidazo[1,2-a]pyridin-2-yl)-2-methyl-3-oxopropyl)carbamate (Preparation 37, 311 mg) was dissolved in dichloromethane (ca 4 mL) and excess trifluoroacetic acid (ca 0.5 mL) was added. The reaction mixture was stirred for 18 hours then the solvent was removed in vacuo. The residue was dissolved in dichloromethane and washed with saturated aqueous sodium bicarbonate. The product stayed in the aqueous phase. The aqueous phase was adjusted to pH=10 with 1N sodium hydroxide, then sodium chloride was added until the solution was saturated. The aqueous phase was extracted three times with ethyl acetate. The combined organic phase was dried over anhydrous magnesium sulfate, filtered and the solvent removed in vacuo. The residue was purified by silica gel column chromatography eluting with 0-100% CMA80 in dichloromethane to afford 233 mg of the title compound as a white solid.

Provenance & Evidence