反应详情

To a stirred suspension of 4-iodo-N1-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)benzene-1,2-diamine in ethanol (100 mL) was added triethyl orthoformate (4.45 g, 30.03 mmol) and p-toluenesulfonic acid monohydrate (0.075 g, 0.39 mmol). As the resulting mixture was warmed to reflux, the solids gradually dissolved to provide an orange solution. After 45 min, the reaction mixture was allowed to cool to room temperature, resulting in the formation of a precipitate. Water (250 mL) was added to the mixture, and the solids were isolated by filtration. The moist solids were dissolved in ethyl acetate (250 mL), and this solution was washed with brine, dried over magnesium sulfate, filtered, and concentrated to provide 5.99 g (91%) of 5-iodo-1-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)-1H-benzo[d]imidazole as a tan solid.

1. temperatureAs the resulting mixture was warmed
2. temperatureto reflux
3. dissolutionthe solids gradually dissolved
4. customto provide an orange solution
5. customresulting in the formation of a precipitate
6. customthe solids were isolated by filtration
7. washthis solution was washed with brine
8. dry with materialdried over magnesium sulfate
9. filtrationfiltered
10. concentrationconcentrated