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    She Yuanbin, Huang Ying, Wang Xiaoyi, Song Xufeng, Chen Yuyun, Yang Jinzong. Studies on Synthesis and Separation of p-Hydroxybenzaldehyde[J]. Journal of Beijing University of Technology, 1999, 25(3): 114-118.
    Citation: She Yuanbin, Huang Ying, Wang Xiaoyi, Song Xufeng, Chen Yuyun, Yang Jinzong. Studies on Synthesis and Separation of p-Hydroxybenzaldehyde[J]. Journal of Beijing University of Technology, 1999, 25(3): 114-118.
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    Studies on Synthesis and Separation of p-Hydroxybenzaldehyde

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    • The synthesis by oxidation of p-cresol to p-hydroxybenzaldehyde with dioxygen in alkali-methanol solution was invehgated. As it turned out, p-hydroxybenzaldehyde in 68.5% yield was obtained by using Co(OAc)2·4H2O-CuSO2·5H2O as a catalyst at 60～70℃, atmosphere for 5h. The two new method for separating reaction products were also studied. One is the complex method of sodium hydrosulfite and p-hydroxybenzaldehyde, in which p-hydroxybenzaldehyde is in higher yield and purity can be obscened by using it to sepalate products at lower conversion of p-cresol. Another is multistage crystal method. in which p-hydroxybenzaldehyde is in higher yield and purity can be obtained by using it to separate products at any conversion of p-cresol.
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