• 제목/요약/키워드: One-pot synthesis

검색결과 221건 처리시간 0.023초

One Pot Four-Component Synthesis of Novel Substituted 2-Phenyl-4(3H) Quinazolinones Using Recyclable Nanocrystalline CuMnO3 Catalyst

  • Borhade, A.V.;Tope, D.R.;Gare, G D.;Dabhade, G.B.
    • 대한화학회지
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    • 제61권4호
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    • pp.157-162
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    • 2017

  • In the present study, nanocrystalline mixed metal oxide, $CuMnO_3$ catalyst have been synthesized by mechanochemical method with green chemistry approach. The synthesized catalyst was characterized by analytical techniques including FTIR, XRD, SEM, TEM and BET surface area. The synthesized catalyst shows high surface area is $121.06m^2/g$ with particle size 18 nm. The one pot four component synthesis of substituted 2-phenyl-4(3H) quinazolinone from the reaction of anthranilic acid, benzoyl chloride, hydrazine hydrate and substituted benzaldehyde in presence of $CuMnO_3$ nanocatalyst has been carried out. It affords the corresponding products with high yield (76-95%) in very short reaction time. All the obtained products were characterized with $^1HNMR$, $^{13}CNMR$, FTIR and EIMS.

  • https://doi.org/10.5012/jkcs.2017.61.4.157 인용 PDF KSCI

One-pot synthesis of highly fluorescent amino-functionalized graphene quantum dots for effective detection of copper ions

  • Tam, Tran Van;Choi, Won Mook
    • Current Applied Physics
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    • 제18권11호
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    • pp.1255-1260
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    • 2018

  • In this work, a green and simple one-pot route was developed for the synthesis of highly fluorescent aminofunctionalized graphene quantum dots (a-GQDs) via hydrothermal process without any further modification or surface passivation. We synthesized the a-GQDs using glucose as the carbon source and ammonium as a functionalizing agent without the use of a strong acid, oxidant, or other toxic chemical reagent. The as-obtained aGQDs have a uniform size of 3-4 nm, high contents of amino groups, and show a bright green emission with high quantum yield of 32.8%. Furthermore, the a-GQDs show effective fluorescence quenching for $Cu^{2+}$ ions which can serve as effective fluorescent probe for the detection of $Cu^{2+}$. The fluorescent probe using the obtained aGQDs exhibits high sensitivity and selectivity toward $Cu^{2+}$ with the limit of detection as low as 5.6 nM. The mechanism of the $Cu^{2+}$ induced fluorescence quenching of a-GQDs can be attributed to the electron transfer by the formation of metal complex between $Cu^{2+}$ and the amino groups on the surface of a-GQDs. These results suggest great potential for the simple and green synthesis of functionalized GQDs and a practical sensing platform for $Cu^{2+}$ detection in environmental and biological applications.

  • https://doi.org/10.1016/j.cap.2018.07.002 인용 KSCI

MeO-PEG-OMe를 사용한 benzo-[1,4]-oxazinone 화합물의 마이크로웨이브 합성 (Microwave-assisted Synthesis of Benzo-[1,4]-oxazinones Using MeO-PEG-OMe as Solvent)

  • 임재민;감경희;김신형;장기완;신동수
    • 대한화학회지
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    • 제56권4호
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    • pp.468-472
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    • 2012

  • 마이크로웨이브를 이용한 가열 방법과 MeO-PEG-OMe를 용매로 사용하여, benzo-[1,4]-oxazinone의 효율적인 one-pot 합성방법을 개발하였으며, 개발한 합성방법을 이용하여, 8 가지의 benzo-[1,4]-oxazinone 화합물과 1H-pyrido[2,3-b][1,4]-oxazin-2-(3H)-one을 좋은 수율로 합성하였다.

  • https://doi.org/10.5012/jkcs.2012.56.4.468 인용 PDF KSCI KPUBS HTML