| 发明名称 |
PRODUCTION METHOD FOR o-SULFOBENZOIC ACID ANHYDRIDE |
| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing o-sulfobenzoic acid anhydride industrially advantageously. SOLUTION: A benzaldehyde-o-sufonic acid salt is oxidized to give an o- carboxybenzenesulfonic acid salt and then the o-carboxybenzenesufonic acid salt is subjected to cyclodehydration.
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| 申请公布号 |
JP2002322172(A) |
申请公布日期 |
2002.11.08 |
| 申请号 |
JP20010125636 |
申请日期 |
2001.04.24 |
| 申请人 |
MITSUBISHI GAS CHEM CO INC |
发明人 |
TSUJIMOTO TOMOO;HIGUCHI YASUSHI;KANBARA YUTAKA;NOGAMI GENKI |
| 分类号 |
C07D327/04;(IPC1-7):C07D327/04 |
主分类号 |
C07D327/04 |
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