反应详情

4.8 g (28 mmol) of 3,4-dimethoxy-2-methylpyridine 1-oxide are metered into 25 ml of acetic anhydride at 85° C. in the course of one hour, the mixture is stirred at the same temperature for one hour and concentrated completely in vacuo. The brown oily residue is distilled in a bulb tube still under 1 Pa. 5.3 g (90% of theory) of 2-acetoxymethyl-3,4-dimethoxypyridine are obtained; b.p. 125°-130° C.

1. concentrationconcentrated completely in vacuo
2. distillationThe brown oily residue is distilled in a bulb tube still under 1 Pa