对羟基苯甲醛的合成

Synthesis of p-Hydroxybenzaldehyde

以对硝基甲苯为原料 ,通过与Na2 Sx 的氧化还原反应生成对氨基苯甲醛 ,再经重氮化及水解反应制得对羟基苯甲醛 ,两步总收率 76% ,大于目前工业生产 <70 %的总收率。

The redox rection of p nitro methylbenzene with  Na 2S x produced the p amino Genzaldehyde,then the p hydroxybenzaldyhyde was obtained by the diazoreaction of p amin benzaldehyde and the overallyield was 76%.