Synthesis 2006(10): 1664-1672  
DOI: 10.1055/s-2006-926464
PAPER
© Georg Thieme Verlag Stuttgart · New York

An Expedient, Flexible and Convergent Access to Selectively Protected 1,5-Dicarbonyl Compounds. Applications to the Synthesis of 2,6-Disubstituted Pyridines and Thiopyridines

Jean Boivin*, Floriane Carpentier, Rafik Jrad
Institut de Chimie des Substances Naturelles, Gif-sur-Yvette 91198, France
Fax: +33(1)69077247; e-Mail: jean.boivin@icsn.cnrs-gif.fr;
Further Information

Publication History

Received 12 July 2005
Publication Date:
27 April 2006 (online)

Abstract

Intermolecular addition of 2-oxoalkyl radicals generated from the corresponding S-alkyl-O-ethyl dithiocarbonates on vinyl ketals afforded selectively protected 1,5-dicarbonyl compounds in good yields. These key-intermediates can be converted into a plethora of useful substances. Transformations to pyridines and thiopyridines were given as examples.