反应详情

After adding 15 ml of 2N sodium hydroxide solution, 4.8 g of 2-acetoxymethyl-3,4-dimethoxypyridine are stirred vigorously at 80° C., whereupon a homogeneous solution forms from the initial two-phase mixture. After 2 hours, the solution is allowed to cool and is extracted five times with 30 ml of methylene chloride each time, the combined organic phases are washed twice with 5 ml of 0.3N sodium hydroxide solution each time, dried over potassium carbonate, filtered and concentrated and the distillation residue is stirred with petroleum ether. 3.6 g (96% of theory) of 2-hydroxymethyl-3,4-dimethoxy-pyridine are obtained as a colorless solid of m.p. 87°-89° C.

1. temperatureto cool
2. extractionis extracted five times with 30 ml of methylene chloride each time
3. washthe combined organic phases are washed twice with 5 ml of 0.3N sodium hydroxide solution each time
4. dry with materialdried over potassium carbonate
5. filtrationfiltered
6. concentrationconcentrated