Benzoyl chloride → HCID 23512658, compound

Participants

Reaction Steps

A solution containing 1-(3-amino-2,2-dimethylpropyl)-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-4-amine (1.0 g, 3.05 mmol) and triethylamine (470 μL, 3.36 mmol) in 1-methyl-2-pyrrolidinone (30 mL) was cooled to 0C. Benzoyl chloride (345 μL, 3.05 mmol) was slowly added dropwise. The reaction mixture was allowed to slowly warm to ambient temperature overnight. The reaction mixture was combined with 1% aqueous sodium bicarbonate solution (150 mL) and then stirred overnight. A fine white precipitate was isolated by filtration and washed with hexanes. The material was dissolved in dichloromethane, methanol and toluene. The solution was concentrated under vacuum. The material was purified by column chromatography (60 g silica gel eluting with 7.5% methanol in dichloromethane) and then dried in a vacuum oven at 50° C. for 2 days to provide 0.82 g of N-{3-[4-amino-2-(2-methoxyethyl)-1H-imidazo[4,5-c]quinolin-1-yl]-2,2-dimethylpropyl}benzamide as an off white powder, m.p. 103-125° C. Analysis: Calculated for C25H29N5O2.0.30 H2O: % C, 68.72; % H, 6.83; % N, 16.03. Found: % C, 68.50; % H, 6.55; % N, 16.02.

Provenance & Evidence