Ammonia → HCID 57550536, compound

Participants

Reaction Conditions

Reaction Steps

1-[(2-Amino-4-chloro-1H-imidazo[4,5-c]quinolin-1-yl)methyl]cyclobutanol (1.14 g, 3.77 mmol) and ammonia (15 mL of a 7 N solution in methanol) were added to a pressure vessel, which was sealed and heated at 150° C. for five days. Additional ammonia in methanol (50 mL) was added after two days. When the reaction was complete, the volatiles were removed under reduced pressure, and the residue was triturated sequentially with methanol and saturated aqueous sodium bicarbonate and isolated by filtration. The resulting yellow solid was purified by automated flash chromatography on silica gel (40+M cartridge, eluting with 0% to 75% CMA in chloroform) followed by recrystallization from methanol. The crystals were dried overnight in a vacuum oven at 90° C. to provide 0.240 g of 1-[(2,4-diamino-1H-imidazo[4,5-c]quinolin-1-yl)methyl]cyclobutanol as pale yellow crystals, mp 295° C. (decomposition).

Provenance & Evidence