| 发明名称 |
Preparation of 3-bromo-4-fluorotoluene |
| 摘要 |
In the preparation of 3-bromo-4-fluorotoluene by reacting 4-fluorotoluene with bromine, the improvement which comprises effecting the bromination in glacial acetic acid in the presence of iodine and iron or an iron salt. As a result the proportion of 3-bromo-4-fluorotoluene relative to its 2-bromo-4-fluorotoluene isomer is markedly increased.
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| 申请公布号 |
US4351974(A) |
申请公布日期 |
1982.09.28 |
| 申请号 |
US19810233413 |
申请日期 |
1981.02.11 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
BAASNER, BERND;KLAUKE, ERICH;KYSELA, ERNST |
| 分类号 |
B01J23/74;B01J27/00;C07B61/00;C07C17/00;C07C17/12;C07C25/13;C07C67/00;(IPC1-7):C07C25/13 |
主分类号 |
B01J23/74 |
| 代理机构 |
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代理人 |
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