• 제목/요약/키워드: one-pot synthesis

검색결과 221건 처리시간 0.022초

5,7-Diaryl-4,4-dimethyl-4,5,6,7-tetrahydropyridino [3,4-d]-1,2,3-selenadiazoles의 손쉬운 One-pot 합성 (A Facile Entry for One-pot Synthesis of 5,7-Diaryl-4,4-dimethyl-4,5,6,7-tetrahydropyridino[3,4-d]-1,2,3-selenadiazoles)

  • Gopalakrishnan, M.;Thanusu, J.;Kanagarajan, V.
    • 대한화학회지
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    • 제52권1호
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    • pp.47-51
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    • 2008
  • 조사 아래 불균일촉매 NaHSO4.SiO2의 존재하에서 5,7-diaryl-4,4-dimethyl-4,5,6,7-tetrahydropyridino [3,4-d]-1,2,3-selenadiazoles의 one-pot.

Facile One-Pot Synthesis of 1,3,5-Trisubstituted Pyrazoles from α,β-Enones

  • Yu, Jin;Kim, Ko Hoon;Moon, Hye Ran;Kim, Jae Nyoung
    • Bulletin of the Korean Chemical Society
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    • 제35권6호
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    • pp.1692-1696
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    • 2014
  • A practical and efficient one-pot synthesis of 1,3,5-trisubstituted pyrazoles from ${\alpha},{\beta}$-enones and arylhydrazine hydrochlorides has been developed. The pyrazoles were formed via a tandem formation of the corresponding pyrazolines and an acid-catalyzed aerobic oxidation process.

친환경적 One Pot 합성, In Vitro에서 Morpholino Pyrimidines의 분광학적 특성과 항균성 및 항진균성 (A Green Chemical Approach towards the 'One-Pot' Synthesis, Spectral Characterization and in Vitro Antibacterial and Antifungal Activities of Morpholino Pyrimidines)

  • Kanagarajan, V.;Thanusu, J.;Gopalakrishnan, M.
    • 대한화학회지
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    • 제53권6호
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    • pp.731-741
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    • 2009
  • $NaHSO_4.SiO_2$ 촉매를 이용한 microwave 및 무수조건하에서 새로운 morpholino pyrimidines의 One-pot합성이다. 합성된 모든 화합물을 이용하여 in vitro에서 임상학적인 단리된 박테리아 품종 즉 Bacillus subtilis, Bacillus cerues, Micrococcus luteus , Salmonella typhii에 대해 항균성을 살펴보았고, 균품종 즉 Aspergillus niger, Candida 6, Candida 51에 대해 항진균성을 살펴보았다. 미생물 결과에 대한 합성된 화합물의 구조적 활동성의 관련성에 대해 토론하였다.

A Green One-Pot Protocol for Regioselective Synthesis of New Substituted 7,8-Dihydrocinnoline-5(6H)-ones

  • Khalafy, Jabbar;Rimaz, Mehdi;Ezzati, Mahnaz;Prager, Rolf H.
    • Bulletin of the Korean Chemical Society
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    • 제33권9호
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    • pp.2890-2896
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    • 2012
  • A simple regioselective synthesis of cinnoline derivatives was achieved by a one-pot three component synthetic methodology. New substituted 7,8-dihydrocinnolin-5(6H)-ones are prepared via one-pot three component reaction of arylglyoxals with 1,3-cyclohexanedione and dimedone in the presence of hydrazine hydrate in moderate to good yields.

One-pot synthesis of PdAu bimetallic composite nanoparticles and their catalytic activities for hydrogen peroxide generation

  • Xiao, Xiangyun;Kang, Tae-Uook;Nam, Hyobin;Bhang, Suk Ho;Lee, Seung Yong;Ahn, Jae-Pyung;Yu, Taekyung
    • Korean Journal of Chemical Engineering
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    • 제35권12호
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    • pp.2379-2383
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    • 2018
  • We report a facile one-pot aqueous-phase synthesis of PdAu bimetallic nanoparticles with different Pd/Au ratio. The synthesis was conducted by co-reduction of Pd and Au precursor using ascorbic acid as a reducing agent and in the presence of polyallylamine hydrochloride (PAH). By high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) and energy-dispersive X-ray spectrometry (EDS) analyses, we found that the synthesized nanoparticles had an onion-like core/shell/shell/shell structure with Au-rich core, Pd-rich shell, Au-rich shell, and Pd shell, respectively. We also investigated the catalytic performance of the synthesized PdAu nanoparticles toward hydrogen peroxide generation reaction.

1,3,5-Trichloro-2,4,6-Triazinetrion: A Versatile Heterocycle for the One-Pot Synthesis of 14-Aryl- or Alkyl -14H-Dibenzo[a,j]xanthene, 1,8-Dioxooctahydroxanthene and 12-Aryl-8,9,10,12-Tetrahydrobenzo[a]xanthene-11-one Derivatives under Solvent-Free Conditions

  • Maleki, Behrooz;Gholizadeh, Mostafa;Sepehr, Zeinalabedin
    • Bulletin of the Korean Chemical Society
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    • 제32권5호
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    • pp.1697-1702
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    • 2011
  • A facile, green, efficient and environment-friendly protocol for the synthesis of 14-aryl- or alkyl-14Hdibenzo[a,j]xanthene, 1,8-dioxooctahydroxanthene and 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one have been developed by one-pot condensation of various aldehydes with (i) ${\beta}$-naphthol (ii) cyclic 1,3-dicarbonyl compounds and (iii) ${\beta}$-naphthol and cyclic 1,3-dicarbonyl compounds, in the presence of 1,3,5-trichloro-2,4,6-triazinetrion (trichloroisocyanuric acid, TCCA) as catalyst under solvent-free conditions. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, easy purification, and economic availability of the catalyst.

One-pot Enzymatic Synthesis of UDP-D-glucose from UMP and Glucose-1-phosphate Using an ATP Regeneration System

  • Lee, Hei-Chan;Lee, Seung-Don;Sohng, Jae-Kyung;Liou, Kwang-Kyoung
    • BMB Reports
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    • 제37권4호
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    • pp.503-506
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    • 2004
  • Glucose-1-phosphate uridylyltransferase from E. coli K12 was used to convert uridine-5'-triphosphate and glucose-1-phosphate to UDP-D-glucose. The conversion was efficient and completed within 5 minutes under the employed conditions. In addition, thymidine-5'-monophosphate kinase and acetate kinase were proven to be non-specific, converting udridine-5'-monophosphate to uridine-5'-triphosphate with 55% conversion after 6 h, which was much slower than the production of TTP under the same conditions (complete conversion within one hour). Since these two reactions could proceed under the same conditions, a one-pot synthesis of UDP-D-glucose with ATP regeneration was designed from easily available starting materials, and conversion up to 40% by HPLC peak integration was achieved given a reaction time of 4 h.

Sulphanilic Acid촉매하에서 벤질/벤조인과 방향족 알데히드로부터 2,4,5-Triarylimidazoles의 간편한 One-pot 합성 (Sulphanilic Acid Catalyzed Facile One-pot Synthesis of 2,4,5-Triarylimidazoles From Benzil/Benzoin and Aromatic Aldehydes)

  • Mohammed, A.F.;kokare, N.D.;Sangshetti, J.N.;Shinde, D.B.
    • 대한화학회지
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    • 제51권5호
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    • pp.418-422
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    • 2007
  • Sulphanilic Acid 촉매를 사용한 벤조인 또는 벤질, 초산암모늄 그리고 방향족 알데히드의 축합반응을 통한 간단하고 높은 수율의 2,4,5-Triarylimidazoles의 One-pot 합성에 대한 보고 값싼 가격의 촉매,높은 수율 그리고 짧은 반응 시간은 제시된 방법의 장점이다.