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Manufacture of halophenols |
| T970006 |
Manufacture of halophenols
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| Patent Drawings: | |
| Inventor: |
Rose |
| Date Issued: |
May 2, 1978 |
| Application: |
05/812,438 |
| Filed: |
July 1, 1977 |
| Inventors: |
Rose; John Brewster (Letchworth, EN)
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| Assignee: |
Imperial Chemical Industries Limited (London, EN) |
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| U.S. Class: |
562/493; 562/840; 568/319; 568/322; 568/333 |
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| Abstract: |
halophenols of formula ##STR1## where X = halogen, are made by condensation of a compound ##STR2## where Z is OH or halogen with a phenol in the presence of anhydrous HF as a catalyst. The compound ##STR3## where X = F, may be made in situ by the reaction of ##STR4## with an alkali metal nitrite in anhydrous HF. |
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