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US 2026/0296998 A1Published application
Process for the preparation of halodifluorobenzene
AssigneeBayer Aktiengesellschaft
InventorsAndreas REMBIAK, Wahed Ahmed MORADI, Anton LISHCHYNSKYI, Sonika RATHORE
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Abstract
The present invention relates to a novel process for preparing 1-halo-3,5-difluorobenzene of the formula (I).
Claims16
A process for preparing a 1-halo-3,5-difluorobenzene of formula (I)
- the process comprising,
- reacting a compound of formula (II)
- in the presence of a halogenating agent comprising a bromine source and/or a chlorine source and an oxidizing agent to form a compound of
- formula (III)
- wherein X is bromo or chloro in formulas (I) and (III);
- and
- reacting the compound of formula (III) in the presence of a nitrite source, a copper catalyst and an oxidizable secondary alcohol to form the 1-halo-3,5-difluorobenzene of formula (I).
4 more elements
Dependencies are inferred from the claim text.