Syntheses of New Carbonyl Derivatives from α-Halohetaryl Ketones
2002
The Krohnke reaction of 2ω-bromoacetylphenoxathiin and 2-ω-bromophenoxathiin 10,10-dioxide, through N-ylide and S-ylide intermediates, leading to the corresponding glyoxals, was described. The condensation reaction of 2-ω-bromoacetylphenoxathiin with aromatic o-hydroxy aldehydes and further cyclization to new furan derivatives was also performed. The new compounds were characterized through elemental analysis and spectral data (IR, 1H NMR and 13C NMR).
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