发明名称 |
METHOD FOR THE PREPARATION OF 3,4-DIHYDROXY-5-NITROBENZALDEHYDE |
摘要 |
A method for the preparation of 3,4-dihydroxy-5-nitrobenzaldehyde by reacting 4-hydroxy-3-methoxy-5-nitrobenzaldehyde with a strong nucleophilic agent which may be created by reacting an aromatic mercapto compound with a strong organic or inorganic alkali metal base such as lithium hydroxide. The reaction is performed at elevated temperatures using an aprotic polar solvent. It is preferably carried out in an inert atmosphere. |
申请公布号 |
WO9300323(A1) |
申请公布日期 |
1993.01.07 |
申请号 |
WO1992FI00192 |
申请日期 |
1992.06.18 |
申请人 |
ORION-YHTYMAE OY |
发明人 |
HONKANEN, ERKKI;LINDHOLM, STIG |
分类号 |
C07C205/44;C07C1/12;C07C201/12;C07C205/45 |
主分类号 |
C07C205/44 |
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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