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Title: Synthesis and characterization of thiazole anchored fluorinated 2-heterylchromones and pyrazoles
Authors: Akolkar, H N
Randhavane, P V
Karale, B K
Keywords: Hydroxyacetophenone;β-diketone;Baker-Venkataraman transformation;Heterylchromones;Pyrazoles
Issue Date: Apr-2017
Publisher: NISCAIR-CSIR, India
Abstract: Esterification of 2-(4-fluorophenyl)-4-methylthiazole-5-carboxylic acid 4 with 2-hydroxyacetophenones 5 yields compounds 6 which have been converted to β-diketones 7 by Baker-Venkataraman transformation. A series of 2-substituted chromones 8 have been obtained by acid catalysed intramolecular cyclization of β-diketones. Substituted pyrazoles 9 have been obtained from β-diketones 7. Formation of all the synthesized compounds have been confirmed by the spectroscopic techniques.
Page(s): 458-462
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.56B(04) [April 2017]

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