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Synthesis 2003(10): 1531-1540
DOI: 10.1055/s-2003-40520
DOI: 10.1055/s-2003-40520
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York
Electron-Rich Amino Heterocycles for Regiospecific Synthesis of Trifluoromethyl-Containing Fused Pyridines
Further Information
Received
17 April 2003
Publication Date:
08 July 2003 (online)
Publication History
Publication Date:
08 July 2003 (online)
Abstract
The reaction of 4,4,4-trifluoro-3-oxobutanoates with the corresponding electron-rich amino heterocycles was investigated. A simple and flexible general procedure for the regiospecific annulation of the trifluoromethylpyridine ring to electron-rich amino heterocycles was proposed. A set of CF3-containing fused pyridines in almost quantitative yield was obtained.
Key words
electrophilic aromatic substitutions - annulations - heterocycles - pyridines - fluorine
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