发明授权
- 专利标题: Process for producing anthraquinone intermediates
- 专利标题(中): 制备蒽醌中间体的方法
-
申请号: US898667申请日: 1978-04-21
-
公开(公告)号: US4292247A公开(公告)日: 1981-09-29
- 发明人: Masao Nishikuri , Akira Takeshita , Hirohito Kenmochi
- 申请人: Masao Nishikuri , Akira Takeshita , Hirohito Kenmochi
- 申请人地址: JPX Osaka
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: JPX Osaka
- 优先权: JPX52-48091 19770425; JPX52-48839 19770426
- 主分类号: C07C225/36
- IPC分类号: C07C225/36 ; C07C97/26
摘要:
1-Amino-2,4-dibromoanthraquinone, which can be hydrolyzed to produce 1-amino-2-bromo-4-hydroxyanthraquinone which is an intermediate for the production of dyes, is produced by bromination of 1-aminoanthraquinone in a concentrated sulfuric acid at a temperature of 50.degree. to 150.degree. C.
公开/授权文献
信息查询