| 发明名称 |
Process for preparing 3,4,5,6-tetrahydrophthalic anhydrides or derivatives thereof |
| 摘要 |
DELTA 1-THPA or a derivative thereof is prepared by isomerizing DELTA 4-THPA or a derivative thereof in the presence of (a) a palladium catalyst, and (b) an inorganic salt and/or a sulfur compound.
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| 申请公布号 |
US4273719(A) |
申请公布日期 |
1981.06.16 |
| 申请号 |
US19790096373 |
申请日期 |
1979.11.21 |
| 申请人 |
NEW JAPAN CHEMICAL COMPANY, LTD. |
发明人 |
TANI, SHOJI;NISHIO, KENJI |
| 分类号 |
C07C51/353;C07C51/567;(IPC1-7):C07D307/89 |
主分类号 |
C07C51/353 |
| 代理机构 |
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代理人 |
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