反应详情

Propane-1-sulfonic acid (2-{1-[1-(4-chloro-phenyl)-cyclobutyl]-1,2,3,4-tetrahydro-isoquinolin-7-yloxy}-ethyl)-amide hydrochloride (example 4, 95.0 mg, 0.19 mmol) was dissolved in 1-butanol (10 ml) and sodium dicyanamide (42.3 mg, 0.48 mmol) was added. The reaction mixture was stirred under reflux. After 4 h, the solvent was removed and dichloromethane was added. The resulting precipitate was removed by filtration and purified by flash column chromatography on silica with dichloromethane/methanol 10:0→94:6. The product was obtained as a solid (30.0 mg, 0.06 mmol, 30.0%).

1. temperatureunder reflux
2. customthe solvent was removed
3. additiondichloromethane was added
4. customThe resulting precipitate was removed by filtration
5. custompurified by flash column chromatography on silica with dichloromethane/methanol 10:0→94:6