• Title/Summary/Keyword: Benzoin condensation

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Polymer Supported Cyanide as an Efficient Catalyst in Benzoin Condensation: An Efficient Route to α-Hydroxy Carbonyl Compounds

  • Kiasat, Ali Reza;Badri, Rashid;Sayyahi, Soheil
    • Bulletin of the Korean Chemical Society
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    • v.30 no.5
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    • pp.1164-1166
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    • 2009

  • Aromatic aldehydes are efficiently self-condensed into $\alpha$-hydroxy carbonyl compounds by polystyrene-supported ammonium cyanide as an excellent organocatalyst in C-C bond formation. The reaction proceeds in water under mild reaction conditions. The polymeric catalyst can be easily separated by filtration and reused several times without appreciable loss of activity.

  • https://doi.org/10.5012/bkcs.2009.30.5.1164 인용 PDF KSCI

Benzoin Condensation Reactions of 5-Membered Heterocyclic Compounds Catalyzed by Thiazolium Salts

  • Chang Kiu Lee;Jin Soon Gong;Sin Kwan Seog;Jong-Gab Jun
    • Bulletin of the Korean Chemical Society
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    • v.14 no.1
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    • pp.29-31
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    • 1993

  • Benzoin condensation reactions of furfurals and thiophenecarboxaldehydes in the presence of substituted benzyl and alkyl thiazolium salts were examined in order to improve the yield of the reaction and to examine the effect of the electronic nature of the catalysts. Thiophene derivatives gave thenils as the major products in low yields while furan derivatives gave only furoins in moderate to high yields.

  • https://doi.org/10.5012/bkcs.1993.14.1.29 인용 PDF

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.

  • https://doi.org/10.5012/jkcs.2007.51.5.418 인용 PDF KSCI KPUBS HTML

An Efficient Synthesis of 2,4,5-Triaryl-1H-Imidazole Derivatives Catalyzed by Boric Acid in Aqueous Media Under Ultrasound-Irradiation

  • Shelke, Kiran F.;Sapkal, Suryakant;Sonal, Swapnil;Madje, Balaji R.;Shingate, Bapurao B.;Shingare, Murlidhar S.
    • Bulletin of the Korean Chemical Society
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    • v.30 no.5
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    • pp.1057-1060
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    • 2009

  • Boric acid ($BO_3H_3$) is an inexpensive, efficient and mild catalyst for the synthesis of 2,4,5-triaryl-1H-imidazoles in excellent yields from the one-pot three-component condensation of benzil/benzoin, an aldehydes and ammonium acetate in aqueous media under ultrasound at room temperature. The remarkable advantages offered by this method are green catalyst, mild reaction conditions, simple procedures, much faster reactions and excellent yield of products.

  • https://doi.org/10.5012/bkcs.2009.30.5.1057 인용 PDF KSCI