3-Amino-1-propanol → HCID 59333332, compound

Participants

Reaction Steps

To a solution of 4-chloro-1-(4-methoxy-phenyl)-7-trifluoromethyl-1H-imidazo[4,5-c]quinoline (153 mg; 0.41 mmol; 1 eq) in anhydrous 1,4-dioxane (18 mL), 3-aminopropanol (77 μL; 1.0 mmol; 2.5 eq) is added. The resulting solution is heated to reflux and allowed to stir for 19 hours after which period the reaction is still not complete on TLC. Thus, additional 3-aminopropanol (523 μL; 6.9 mmol; 17 eq) is added and the stirring is continued under reflux for 4 hours. The crude mixture is diluted with ethyl acetate (40 mL) and washed three times with a 1M aqueous solution of NaOH (3×40 mL). Aqueous layers are combined and re-extracted with ethyl acetate (75 mL). All organic layers are combined, dried over sodium sulfate and concentrated. The crude residue is purified on silica gel (cyclohexane/ethyl acetate 2:8) to afford the title compound as an off-white powder (145 mg; 0.35 mmol; 85%).

Provenance & Evidence