• Title, Summary, Keyword: Cyclic-1,3-diketones

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A Systematic Study on Knoevenagel Reaction and Nazarov Cyclization of Less Reactive Carbonyl Compounds Using Rare Earth Triflates and Its Applications

  • Ilangovan, A.;Muralidharan, S.;Maruthamuthu, S.
    • Journal of the Korean Chemical Society
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    • v.55 no.6
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    • pp.1000-1006
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    • 2011
  • A systematic study of Knoevenagel reaction and Nazarov cyclization was made on variety of less reactive carbonyl compounds such as ${\beta}$-ketoesters, 1,3-diketones and cyclic active methylene compounds using $Yb(OTf)_3$ as the catalyst. Recycling study confirms reusability of the catalyst without much loss of activity.

Hydrated Ferric Sulfate [Fe2(SO4)3·xH2O]: An Efficient and Reusable Catalyst for One-Pot Synthesis of 2H-Indazolo[2,1-b]phthalazine-triones

  • Choudhury, Abhik;Ali, Shahzad;Khan, Abu T.
    • Journal of the Korean Chemical Society
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    • v.59 no.4
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    • pp.280-283
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    • 2015
  • Hydrated ferric sulfate can be used as an efficient and reusable catalyst for the synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives via one-pot three-component condensation reaction of phthalhydrazide, aromatic aldehydes and cyclic-1,3-diketones in ethanol under reflux conditions.

Efficient One-Pot Synthesis of Acridinediones by Indium(III) Triflate-Catalyzed Reactions of β-Enaminones, Aldehydes, and Cyclic 1,3-Dicarbonyls

  • To, Quang Huy;Lee, Yong-Rok;Kim, Sung-Hong
    • Bulletin of the Korean Chemical Society
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    • v.33 no.4
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    • pp.1170-1176
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    • 2012
  • An efficient one-pot synthesis of acridinediones by $In(OTf)_3$-catalyzed reactions was developed starting from ${\beta}$-enaminones, aldehydes, and cyclic 1,3-diketones. The key strategies of these reactions involve domino Knoevenagel condensation/Michael addition/cyclodehydration reaction.