Process for the preparation of 5-bromo-1,2,3-trichlorobenzene
US9975823B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Oct 8, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C25/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of a compound of formula I (I), comprising reacting a compound of formula II (II), with a brominating agent in the presence of an acidic catalyst to a compound of formula III (III), and reacting the compound of formula III in tetrahydrofuran or 2-methyl-tetrahydrofuran with potassium tert-butoxide to a compound of formula I.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.