• Title/Summary/Keyword: Solvent-Free Conditions

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Solid-Phase Synthesis of 2-Arylbenzothiazole Using Silica Sulfuric Acid under Microwave Irradiation

  • Niralwad, Kirti S.;Shingate, Bapurao B.;Shingare, Murlidhar S.
    • Bulletin of the Korean Chemical Society
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    • v.31 no.4
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    • pp.981-983
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    • 2010

  • The condensation of several aromatic/heteroaromatic aldehydes with 2-aminothiophenol catalyzed by silica sulfuric acid under microwave irradiation afforded 2-arylbenzothiazoles in high yields and short reaction times under solvent-free conditions. The major advantages of the present method are good yields, ecofriendly, reusable catalyst, mild and solvent-free reaction conditions.

  • https://doi.org/10.5012/bkcs.2010.31.04.981 인용 PDF KSCI

An Efficient Method for N-Formylation of Amines Using Natural HEU Zeolite at Room Temperature Under Solvent-Free Conditions

  • Bahari, Siavash;Mohammadi-Aghdam, Babak;Mohammad Sajadi, S.;Zeidali, Fereshteh
    • Bulletin of the Korean Chemical Society
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    • v.33 no.7
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    • pp.2251-2254
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    • 2012

  • A rapid and practical green route for N-formylation of primary and secondary amines with formic acid at room temperature under the solvent-free conditions using HEU zeolite as a heterogeneous, reusable and highly efficient catalyst is described. The process is remarkably simple and environmentally benign. Excellent chemoselectivity was observed for the conversion of primary amines in the presence of secondary amines.

  • https://doi.org/10.5012/bkcs.2012.33.7.2251 인용 PDF KSCI

NaHSO4/SiO2: An Efficient Catalyst for the Synthesis of β-Enaminones and 2-Methylquinolin-4(1H)-Ones under Solvent-Free Condition (NaHSO4/SiO2: Solvent-Free 반응 조건에서 β-Enaminone들과 2-Methylquinolin-4(1H)-One들의 합성을 위한 효율적인 촉매)

  • Sapkal, Suryakant B.;Shelke, Kiran F.;Shingate, Bapurao B.;Shingare, Murlidhar S.
    • Journal of the Korean Chemical Society
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    • v.54 no.6
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    • pp.723-726
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    • 2010

  • An efficient and simplified protocol for $NaHSO_4/SiO_2$ catalyzed solvent-free synthesis of $\beta$-enaminone and 2-methylquinolin-4(1H)-one derivatives under microwave irradiation is described. A series of functionalized derivatives have been synthesized in shorter reaction times with moderate to good yields. The use of milder catalyst in non-conventional method offers significant advantages over conventional methods, such as higher selectivities, simplicity, solvent-free reaction and non-environmental polluting conditions.

  • https://doi.org/10.5012/jkcs.2010.54.6.723 인용 PDF KSCI KPUBS HTML