• Title/Summary/Keyword: Aldehydes synthesis

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Solvent-free Synthesis of Propargylic Alcohols using ZnO as a New and Reusable Catalyst by Direct Addition of Alkynes to Aldehydes

  • Hosseini-Sarvari, Mona;Mardaneh, Zahra
    • Bulletin of the Korean Chemical Society
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    • v.32 no.12
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    • pp.4297-4303
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    • 2011
  • Under solvent-free conditions, the synthesis of propargylic alcohols by direct addition of terminal alkynes to aldehydes promoted by ZnO as a novel, commercially, and cheap catalyst is described. Furthermore, the catalyst can be reused for several times without any significant loss of its catalytic activity.

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.

Direct Organocatalytic Regioselective α-Hydroxyamination of α-Branched Aldehydes

  • Kim, Sung-Gon;Ahn, Eun-Ju;Park, Tae-Ho
    • Bulletin of the Korean Chemical Society
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    • v.28 no.10
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    • pp.1665-1669
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    • 2007
  • A direct regioselective α-hydroxyamination of α-branched aldehydes with nitrosobenzene using cis-5-benzylproline as catalyst has been developed for the preparation of α-hydroxyamino aldehydes possessing a quaternary carbon center. Such compounds are versatile building blocks for the synthesis of quaternary α- amino acids, β-amino alcohols, and 1,2-diamines.

Sulphanilic Acid Catalyzed Facile One-pot Synthesis of 2,4,5-Triarylimidazoles From Benzil/Benzoin and Aromatic Aldehydes (Sulphanilic Acid촉매하에서 벤질/벤조인과 방향족 알데히드로부터 2,4,5-Triarylimidazoles의 간편한 One-pot 합성)

  • Mohammed, A.F.;kokare, N.D.;Sangshetti, J.N.;Shinde, D.B.
    • Journal of the Korean Chemical Society
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    • v.51 no.5
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    • pp.418-422
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    • 2007
  • A simple and high yielding one-pot method for synthesis of 2,4,5-triarylimidazoles from condensation of benzoin or benzil, ammonium acetate and aromatic aldehydes using sulphanilic acid catalyst is described. The lower priced catalyst, higher yields and shorter reaction time are the advantages of the presented method.