Synthesis 2005(5): 781-786  
DOI: 10.1055/s-2005-861827
PAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Alkoxy-Substituted Pyridines from Mono- and Tricationic Pyridinium Salts

Andreas Schmidt*, Thorsten Mordhorst
Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, 38678 Clausthal-Zellerfeld, Germany
Fax: +49(5323)723861; e-Mail: schmidt@ioc.tu-clausthal.de;
Further Information

Publication History

Received 20 October 2004
Publication Date:
14 February 2005 (online)

Abstract

Nucleophilic substitution reactions on 4-(4-dimethyl­amino)-pyridinium-substituted tetrachloropyridine with oxygen nucleophiles such as alkoxides and phenolates resulted in the formation of 4- or 2,4-alkoxy- or -phenoxy-substituted chloropyridines depending on the reaction conditions. Substitution on 2,4,6-tris(4-dimethylamino)pyridinium-substituted 3,5-dichloropyridine gave the corresponding 2,4,6-tris-alkoxy- or -phenoxy-substituted pyridines which are not available by other routes.