反应详情

To a solution of 5-[4-(amino)butylthio]imidazo[1,2-a]pyridine (440 mg, 1.99 mmoles) and triethylamine (0.42 ml, 3.01 mmoles) in methylene chloride (20 ml) was added methanesulfonyl chloride (0.19 ml, 2.45 mmoles) under ice-cooling with stirring and the mixture was stirred under ice-cooling for 1 hour. The reaction mixture was washed in turn with an aqueous saturated sodium bicarbonate solution and saturated saline and dried over anhydrous magnesium sulfate. After the solvent was distilled off, the residue was purified by column chromatography (eluent: ethyl acetate) to obtain 302 mg of the desired product (50.8%, light red brown solid).

1. temperaturecooling
2. stirringthe mixture was stirred under ice-
3. temperaturecooling for 1 hour
4. washThe reaction mixture was washed in turn with an aqueous saturated sodium bicarbonate solution and saturated saline
5. dry with materialdried over anhydrous magnesium sulfate
6. distillationAfter the solvent was distilled off
7. customthe residue was purified by column chromatography (eluent: ethyl acetate)