Dechlorination of pyridines in acidic, zinc-containing mediums

Described are preferred processes for preparing 3,5-dichloropyridines by dechlorinating higher-chlorinated pyridine compounds such as 2,3,5,6-tetrachloropyridine in an acidic medium in the presence of zinc and optionally a quaternary ammonium catalyst.

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Bibliographic Details
Main Authors YANG Z. JASON, HUCKSTEP L. MARK, LAWIN PHILLIP B
Format Patent
LanguageEnglish
Published 06.02.2001
Edition7
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:Described are preferred processes for preparing 3,5-dichloropyridines by dechlorinating higher-chlorinated pyridine compounds such as 2,3,5,6-tetrachloropyridine in an acidic medium in the presence of zinc and optionally a quaternary ammonium catalyst.
Bibliography:Application Number: US19990354279