发明名称 |
Process for producing p-hydroxybenzaldehyde |
摘要 |
A process for producing p-hydroxybenzaldehyde through p-aminobenzaldehyde from p-nitrotoluene, comprising reacting p-nitrotoluene with sodium polysulphide in an alcohol-alkali aqueous solution mixed solvent in the presence or absence of an aprotic polar compound to produce p-aminobenzaldehyde, diazotizing the p-aminobenzaldehyde and then hydrolyzing the diazotized p-aminobenzaldehyde to produce p-hydroxybenzaldehyde.
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申请公布号 |
US4195041(A) |
申请公布日期 |
1980.03.25 |
申请号 |
US19780938125 |
申请日期 |
1978.08.30 |
申请人 |
SEITETSU KAGAKU CO LTD |
发明人 |
KANAZAWA, TADASHI;KATO, KUNIOKI;KAWAMURA, MASAO;MIZOKAMI, HIROSHI;NISHI, TADAAKI |
分类号 |
C07C45/64;(IPC1-7):C07C45/00 |
主分类号 |
C07C45/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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