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Pyridine hydrochloride: a new reagent for the synthesis of o-chloro hydroxy derivatives in pyridine and quinoline series

✍ Scribed by Florence Mongin; Olivier Mongin; François Trécourt; Alain Godard; Guy Quéguiner

Publisher: Elsevier Science
Year: 1996
Tongue: French
Weight: 214 KB
Volume: 37
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(96)01449-9

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✦ Synopsis

Pyridine hydroehloride has been widely used in the cleavage of ethers. It is shown herein that this reagent is also efficient for the synthesis of chloro compounds starting from the corresponding bromo derivatives in n-deficient series such as pyridine and quinoline. Thus, for example, 7-bromo-8-hydroxyquinoline was almost quantitatively converted into 7-chloro-8-hydroxyquinoline. The scope of the reaction has been studied.

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