发明名称 |
Preparation of alkoxy(iso)violanthrenediones |
摘要 |
A process for the preparation of bisalkoxy(iso)violanthrenediones involves alkylating the corresponding bishydroxyl compounds in an organic reaction medium with methyl benzoate as the reaction medium. The ester can easily be regenerated and is stable under the reaction conditions.
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申请公布号 |
US4882095(A) |
申请公布日期 |
1989.11.21 |
申请号 |
US19880246312 |
申请日期 |
1988.09.19 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
HELWIG, REINHARD;HOCH, HELMUT |
分类号 |
C09B3/36 |
主分类号 |
C09B3/36 |
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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