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发明公开
CN1763009A 2－吡啶甲醛的制备方法 无效 - 撤回

2－吡啶甲醛的制备方法
摘要：
2－吡啶甲醛的制备属于有机化合物的合成方法，以2－氰基吡啶为起始原料，在质子酸水溶液中，于一般温度下，分别采用固定床装置和釜式反应装置，以钯碳作催化剂，催化加氢一步反应合成2－吡啶甲醛；所述质子酸为硫酸、盐酸、磷酸和乙酸，2－氰基吡啶与质子酸的摩尔配比为1∶1.0～5.0；质子酸水溶液的质量浓度在5％～50％之间；所述的钯碳催化剂，钯含量在1％～15％之间，其质量用量为2－氰基吡啶用量的5％～40％。本发明反应条件适宜，收率高，操作简便，易于工业化生产。
摘要（英）：

The present invention is 2-pyridyl formaldehyde preparing process, and belongs to the field of synthesis of organic compound. Inside protonic acid aqua in fixed bed reactor or kettle reactor, at normal temperature and in the presence of Pd/C catalyst, 2-cyanopyridine as initial material is catalytically hydrogenated to synthesize 2-pyridyl formaldehyde. The protonic acid is sulfuric acid, hydrochloric acid, phosphoric acid or acetic acid; the molar ratio between 2-cyanopyridine and protonic acid is 1 to 1.0-5.0; the mass concentration of protonic acid aqua is 5-50 %; and the Pd/C catalyst has Pd content of 1-15 % and mass amount of 5-40 wt% of 2-cyanopyridine. The present invention has proper reaction condition, high yield and simple operation, and is easy application in industrial production.

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