• Title/Summary/Keyword: one-pot synthesis

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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.
    • Journal of the Korean Chemical Society
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    • v.61 no.4
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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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    • v.18 no.11
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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

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

  • Lim, Jae-Min;Gam, Gyung-Hee;Kim, Shin-Hyuong;Jang, Ki-Wan;Shin, Dong-Soo
    • Journal of the Korean Chemical Society
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    • v.56 no.4
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    • pp.468-472
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    • 2012

  • Efficient one-pot microwave-assisted synthesis of various benzo-[1,4]-oxazinones via Smiles rearrangement is described. Treatment of 2-chloroacetamide, substituted 2-chlorophenols and cesium carbonate in MeO-PEG-OMe (2,000) as solvent afforded the corresponding benzo-[1,4]-oxazinones and 1H-pyrido[2,3-b][1,4]-oxazin-2-(3H)-one as moderate yield.

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