Process for preparing halogen-substituted dibenzyl alcohols, these halogen-substituted dibenzyl alcohols and their use
US6759558B2 · kind B2 · utility
5Cited by
11References
13Claims
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Key dates
| Filing date | Apr 5, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/147
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel process allows a simple preparation of highly pure halogen-substituted dibenzyl alcohols by reduction of the corresponding halogen-substituted terephthalic acids and reaction with an alkylating agent, sulfuric acid, alkyl- or arylsulfonic acids. The highly pure halogen-substituted dibenzyl alcohols obtained are suitable in particular for preparing pharmaceutically or agrochemically active compounds.
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