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|Title:||Iodine (III) mediated synthesis of new 5-aryl-3-(4-hydroxy-6-methyl-2<i>H</i>-pyran-2-oxo-3-yl)-1-phenylpyrazoles from dehydrogenation of 5-aryl-3-(4-hydroxy-6-methyl-2<i>H</i>-pyran-2-oxo-3-yl)-1-phenylpyrazolines|
Singh, Shiv P
|Series/Report no.:||<b>Int</b>.<b>Cl</b>.<b><sup>7</sup> C 07 D</b>|
|Abstract:||3-Cinnamoyl-4-hydroxy-6-methyl-2-pyrones (chalcone analogs of DHA) on condensation with phenylhydrazine in ethanol, yield 5-aryl-3-(4-hydroxy-6-methyl-2<i>H</i>-pyran-2-oxo-3-yl)-1-phenylpyrazolines which undergo smooth dehydrogenation to the corresponding pyrazoles in good yield upon treatment with iodobenzene diacetate (IBD).|
|Appears in Collections:||IJC-B Vol.45B(02) [February 2006]|
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