• 제목/요약/키워드: One-pot three component synthesis

검색결과 32건 처리시간 0.021초

A Green One-Pot Protocol for Regioselective Synthesis of New Substituted 7,8-Dihydrocinnoline-5(6H)-ones

  • Khalafy, Jabbar;Rimaz, Mehdi;Ezzati, Mahnaz;Prager, Rolf H.
    • Bulletin of the Korean Chemical Society
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    • 제33권9호
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    • pp.2890-2896
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    • 2012
  • A simple regioselective synthesis of cinnoline derivatives was achieved by a one-pot three component synthetic methodology. New substituted 7,8-dihydrocinnolin-5(6H)-ones are prepared via one-pot three component reaction of arylglyoxals with 1,3-cyclohexanedione and dimedone in the presence of hydrazine hydrate in moderate to good yields.

Silica Gel을 이용한 효율적인 3,4-dihydropyrano[c]chromenes의 합성 (Silica Gel Promoted Mild, Efficient and Inexpensive Protocol for the Preparation of 3,4-dihydropyrano[c]chromenes)

  • Prasanna, T.S.R.;Raju, K. Mohana
    • 대한화학회지
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    • 제55권4호
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    • pp.662-665
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    • 2011
  • 실온에서 방향족 알데히드, 말론니트릴과4-히드록시쿠마린을neat 실리카젤 속에서 one-pot반응시켜서 3,4-dihydropyrano[c]chromenes을 좋은 수율로 합성하였다.

1-Butyl-3-Methyl Imidazolium Hydrogen Sulphate Promoted One-Pot Three-Component Synthesis of Amidoalkyl Naphthols

  • Sapkal, Suryakant B.;Shelke, Kiran F.;Madje, Balaji R.;Shingate, Bapurao B.;Shingare, Murlidhar S.
    • Bulletin of the Korean Chemical Society
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    • 제30권12호
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    • pp.2887-2889
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    • 2009
  • An efficient and easy method for one-pot three-component synthesis of amidoalkyl naphthols by the condensation of aromatic/heteroaromatic/aliphatic aldehydes, 2-naphthol and amides or urea under thermal condition at $60^{\circ}C$ in the presence of acidic ionic liquid 1-butyl-3-methylimidazolium hydrogen sulphate ([bmim]$HSO_4$) has been described.

A Simple and Efficient One-Pot Three-Component Synthesis of Propargylamines Using Bismuth (III) Chloride

  • Teimouri, Abbas;Chermahini, Alireza Najafi;Narimani, M.
    • Bulletin of the Korean Chemical Society
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    • 제33권5호
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    • pp.1556-1560
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    • 2012
  • A simple highly versatile and efficient method has been developed for the three-component coupling of aldehydes, amines and alkynes to prepare propargylamines, in the presence of a catalytic amount of $BiCl_3$. The advantages of methods are high yield, mild reaction conditions, no environmental pollution and easy work up procedure.

Applications of Cross-linked Poly(4-vinylpyridine/styrene) Copolymer supported Ytterbium(III) Triflate in Mannich-type Reaction:Three Component One-pot Synthesis of β-Aminoketones

  • Lee, Sang-Hyeup;Lee, Byoung-Se
    • Bulletin of the Korean Chemical Society
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    • 제30권3호
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    • pp.551-555
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    • 2009
  • The ytterbium catalyst immobilized on the cross-linked poly(4-vinylpyridine/styrene) copolymer (P/S-Yb) was applied in the Mannich-type, three component one-pot synthesis of $\beta$-aminoketones. This catalytic system showed excellent catalytic activity and selectivity which resulted in the exclusive formation of $\beta$-aminoketone. The applicability of this immobilized catalyst system was shown by the reusability test and again highlighted by the synthesis of a $\beta$-aminoketone library using a broad range of substrates.

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.
    • 대한화학회지
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    • 제59권4호
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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.

Magnesium Bistrifluoromethanesulfonimide Catalyzed Three-component Synthesis of Protected Homoallylic Amines

  • Wang, Hongshe;Zeng, June
    • Bulletin of the Korean Chemical Society
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    • 제32권7호
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    • pp.2203-2206
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    • 2011
  • A mild and efficient procedure has been developed for the one-pot, three-component reaction of aldehydes, benzyl carbamate and allyltrimethylsilane in the presence of 3 mol % of magnesium bistrifluoromethanesulfonimide at room temperature to afford the corresponding protected homoallylic amines in high yields.

A Facile Solvent and Catalyst Free Synthesis of New Dihydro Pyrimidinones as Antimicrobial Agents

  • Hegde, Hemant;Ahn, Chuljin;Gaonkar, Santosh L.;Shetty, Nitinkumar S.
    • 대한화학회지
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    • 제63권6호
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    • pp.435-439
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    • 2019
  • An efficient one pot multicomponent synthesis of pyrimidinone derivatives of Biginelli type is described. 4-amino-6-aryl-pyrimidine-5-carbonitrile molecules were synthesized efficiently via three-component Biginelli-type condensation of aldehyde, malononitrile, and semicarbazone as urea substituent in the presence of a catalytic amount of PEG-400 as green medium under microwave irradiation. The reactions proceeded efficiently in the presence of microwave radiation to afford the desired products in good to excellent yields. Products have been confirmed by IR, and NMR spectral analysis. All the molecules were tested for their antimicrobial activity against E. coli, S. aureus, P. aeruginosa and C. tropicalis. Some of the compounds have shown moderate to good inhibition efficiency against both gram-positive and gram-negative bacteria. The potent activity was observed against the fungal species with minimum inhibition concentration 12.5 ㎍/mL.