Processes for preparing 2,5-dichlorophenol
US10550063B2 · kind B2 · utility
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27References
42Claims
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Key dates
| Filing date | Oct 2, 2015 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Oct 2, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes for producing 2,5-dichlorophenol and 3,6-dichloro-2-methoxybenzoic acid are described. Various processes for isomerizing 2,4-dichlorophenol over a zeolite catalyst to form 2,5-dichlorophenol are provided. Processes for preparing 2,5-dichlorophenol including hydroxylating 1,4-dichlorobenzene are also described. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.