Dimethylformamide → HCID 57657251, compound

Participants

Reaction Steps

A 20-ml glass vial was charged with anhydrous DMF (1 mL), 3-[4-amino-2-(ethoxymethyl)-1-(2-hydroxy-2-methylpropyl)-1H-imidazo[4,5-c]quinolin-7-yl]propanoic acid (165 mg, 0.43 mmol), N-(3-dimethylaminopropyl)-N″-ethylcarbodiimide hydrochloride (100 mg, 0.52 mmol, 1.3 eq), 1-hydroxybenzotriazole (70.3 mg, 0.52 mmol, 1.3 eq), and morpholine (110 mg, 1.29 mmol, 3.0 eq). The reaction was maintained at ambient temperature overnight. The reaction mixture was poured into water (10 mL), and the resulting mixture was extracted with dichloromethane (3×10 mL). The chloroform fractions were combined and concentrated, and the residue was purified by chromatography using a HORIZON HPFC system (silica cartridge, eluting with 0-30% CMA in chloroform) followed by recrystallization from acetonitrile to provide 1-[4-amino-2-(ethoxymethyl)-7-(3-morpholin-4-yl-3-oxopropyl)-1H-imidazo[4,5-c]quinolin-1-yl]-2-methylpropan-2-ol as a white solid, mp 118-119° C.

Provenance & Evidence