发明名称 |
Trifluoromethylbenzoyl bromide and conversion of same to bromobenzotrifluoride |
摘要 |
A novel compound, trifluoromethylbenzoyl bromide, is formed by bromination of trifluoromethylbenzoic acid with, e.g., phosphorus tribromide or by halogen exchange reaction of trifluoromethylbenzoyl chloride with bromine in the presence of a metal bromide. Decarbonylation of 2-, 3- or 4-trifluoromethylbenozyl bromide using a catalyst such as a phosphine-rhodium complex gives 2-, 3- or 4-bromobenzotrifluoride without forming isomers.
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申请公布号 |
US4968852(A) |
申请公布日期 |
1990.11.06 |
申请号 |
US19890456086 |
申请日期 |
1989.12.28 |
申请人 |
CENTRAL GLASS COMPANY, LIMITED |
发明人 |
KAWAI, TOSHIKAZU;OSHIO, HIDEKI |
分类号 |
C07C25/13;B01J31/24;C07B61/00;C07C17/00;C07C17/363;C07C51/363;C07C51/58;C07C63/04;C07C63/70;C07C67/00 |
主分类号 |
C07C25/13 |
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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