Triethylamine → HCID 57657225, compound

Participants

Reaction Steps

7-(3-Aminopropyl)-2-ethyl-1-(tetrahydro-2H-pyran-4-ylmethyl)-1H-imidazo[4,5-c]quinolin-4-amine (500 mg, 1.4 mmol), triethylamine (410 mg, 4.1 mmol), and isopropyl isocyanate (128 mg, 1.5 mmol) were combined in dichloromethane (50 mL) at 0° C. and the reaction was stirred for approximately 18 hours. Aqueous sodium carbonate (1%, 50 mL) was added and the reaction mixture was stirred for one additional hour. The fractions were separated and the aqueous fraction was extracted with chloroform (3×20 mL). The combined organic fractions were sequentially dried (MgSO4), filtered and purified by chromatography using a HORIZON HPFC system (silica cartridge, eluting with a CMA:chloroform gradient, 0-20% CMA over 2000 mL). The desired product was further purified by chromatography using a HORIZON HPFC system (silica cartridge, eluting with 10% methanol in dichloromethane over 1500 mL). A final purification by recrystallization from acetonitrile provided 142 mg of N-{3-[4-amino-2-ethyl-1-(tetrahydro-2H-pyran-4-ylmethyl)-1H-imidazo[4,5-c]quinolin-7-yl]propyl}-N′-isopropylurea as a white solid, mp 213-216° C.

Provenance & Evidence