• 제목/요약/키워드: One-pot synthesis

검색결과 222건 처리시간 0.024초

A Simple and One-pot Oxidative Conversion of Alcohols or Aldehydes to the Nitriles using NaIO4/KI in Aqueous NH3

  • Zolfigol, Mohammad Ali;Hajjami, Maryam;Ghorbani-Choghamarani, Arash
    • Bulletin of the Korean Chemical Society
    • /
    • 제32권12호
    • /
    • pp.4191-4194
    • /
    • 2011
  • Sodium periodate ($NaIO_4$) and potassium iodide (KI) in aqueous ammonia has been used for the one-pot synthesis of nitriles from the corresponding aldehydes and alcohols in moderate to good yield. This transformation, proceeds via an in situ oxidation- imination-aldimine oxidation sequence.

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
    • /
    • 제55권4호
    • /
    • pp.662-665
    • /
    • 2011
  • 실온에서 방향족 알데히드, 말론니트릴과4-히드록시쿠마린을neat 실리카젤 속에서 one-pot반응시켜서 3,4-dihydropyrano[c]chromenes을 좋은 수율로 합성하였다.

Acid-Base Bifunctional Metal-Organic Frameworks: Green Synthesis and Application in One-Pot Glucose to 5-HMF Conversion

  • Zhang, Yunlei;Jin, Pei;Meng, Minjia;Gao, Lin;Liu, Meng;Yan, Yongsheng
    • Nano
    • /
    • 제13권11호
    • /
    • pp.1850132.1-1850132.14
    • /
    • 2018
  • The direct synthesis of metal-organic frameworks (MOFs) with acidic and basic active sites is challenging due to the introduction of functional groups by post-functionalization method often jeopardize the framework integrity. Herein, we report the direct synthesis of acid-base bifunctional MOFs with tuning acid-base strength. Employing modulated hydrothermal (MHT) approach, microporous MOFs named $UiO-66-NH_2$ was prepared. Through the ring-opening reaction of 1,3-propanesultone with amino group, $UiO-66-NH_2-SO_3H-type$ catalysts can be obtained. The synthesized catalysts were well characterized and their catalytic performances were evaluated in one-pot glucose to 5-HMF conversion. Results revealed the acid-base bi-functional catalyst possessed high activity and excellent stability. This work provides a general and economically viable approach for the large-scale synthesis of acid-base bi-functional MOFs for their potential use in catalysis field.