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将 2 -甲基吡啶与碘混合后加热至 14 5°C反应可直接得到 2 -吡啶甲醛 ,收率 35 %。同法也可制备 2 ,4 -吡啶二甲醛
After 2 - picoline and iodine were mixed and heated to 14 5 ° C, 2 - pyridinecarboxaldehyde was directly obtained in 35% yield. The same method can also be prepared 2,4 - pyridinedicarboxaldehyde