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Synthesis 2006(10): 1664-1672
DOI: 10.1055/s-2006-926464
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
Further Information
Received
12 July 2005
Publication Date:
27 April 2006 (online)
Publication History
Publication Date:
27 April 2006 (online)
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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.
Key words
ketals - alkenes - ketones - pyridines - radical reactions
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