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Title: Condensation reactions of various nucleophiles with 3-formylchromone
Authors: Halnor, V B
Dalvi, N R
Joshi, N S
Gill, C H
Karale, B K
Keywords: Formylchromones
Issue Date: Jan-2006
Publisher: CSIR
Series/Report no.: <b>Int</b>.<b>Cl</b>.<b><sup>7</sup> C 07 D</b>
Abstract: 3-Formylchromones <b>1 </b>are condensed with 1-(2,4-difluorophenyl-2-[1,2,4]triazol-4-yl)ethanone in acetic anhydride to afford 3-[3-(2,4-difluoro-phenyl)-3-oxo-2-[1,2,4]triazol-4-yl)propenyl]chromon-4-ones <b>2</b>.<b> </b>3-Formylchromone <b>1 </b>when heated with benzo[d]isoxazol-3-yl-acetic acid in dry pyridine yield 3-(2-benzo[d]isoxazol-3-yl-vinyl)chromon-4-ones <b>3</b>. Further, 3-formylchromone <b>1 </b>on heating with N-methylpiperizine in ethanol give 1-(2-hydroxyphenyl)-3-(4-methyl-piperazin-1-yl)propenones <b>4</b>.
Description: 288-291
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.45B(01) [January 2006]

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