发明授权
- 专利标题: Preparation of thiophenes
- 专利标题(中): 噻吩的制备
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申请号: US390490申请日: 1982-06-21
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公开(公告)号: US4447624A公开(公告)日: 1984-05-08
- 发明人: James J. Krutak , Robert J. Maleski
- 申请人: James J. Krutak , Robert J. Maleski
- 申请人地址: NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: NY Rochester
- 主分类号: C07D239/56
- IPC分类号: C07D239/56 ; C07D333/36 ; C07D333/38 ; C07D521/00
摘要:
Process for the preparation of thiophenes having the structure ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 can be various substituents. The compounds can be converted to the corresponding 2-amino compounds from which azo dyes can be prepared.