• 제목/요약/키워드: Solvent-free conditions

검색결과 146건 처리시간 0.019초

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
    • /
    • 제31권4호
    • /
    • pp.981-983
    • /
    • 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
    • /
    • 제33권7호
    • /
    • pp.2251-2254
    • /
    • 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: Solvent-Free 반응 조건에서 β-Enaminone들과 2-Methylquinolin-4(1H)-One들의 합성을 위한 효율적인 촉매 (NaHSO4/SiO2: An Efficient Catalyst for the Synthesis of β-Enaminones and 2-Methylquinolin-4(1H)-Ones under Solvent-Free Condition)

  • Sapkal, Suryakant B.;Shelke, Kiran F.;Shingate, Bapurao B.;Shingare, Murlidhar S.
    • 대한화학회지
    • /
    • 제54권6호
    • /
    • pp.723-726
    • /
    • 2010

  • 마이크로 반응을 이용하여 $NaHSO_4/SiO_2$을 촉매로 하는 solvent-free 합성을 통하여 $\beta$-enaminone 과 2-methylquinolin-4(1H)-one 및 그 유도체를 합성하는 효율적인 방법을 개발하였다. 반응 시간이 짧고, 수율이 좋았으며, 마이크로웨이브를 사용하지 않는 반응보다는 높은 선택성, 간단성, 무용매 반응 및 친환경적인 반응이다.

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