• 제목/요약/키워드: Cycloaddition

검색결과 208건 처리시간 0.024초

New Synthesis of Perhydrotriazolotriazoles Catalyzed by TiCl4 under Ambient Conditions

  • Safari, J.;Gandomi-Ravandi, S.;Ghotbinejad, M.
    • 대한화학회지
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    • 제56권1호
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    • pp.78-81
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    • 2012
  • Aromatic 2,3-diazabuta-1,3-dienes in glacial acetic acid with isothiocyanate in the presence of catalyst $TiCl_4$ at room temperature produced via criss-cross cycloaddition reactions the corresponding perhydro[1,2,4]triazolo[1,2-a][1,2,4] triazole-1,5-dithiones in relatively high yields and short reaction time.

Facile Synthesis of Fréchet Type Dendritic Benzyl Azides and Dendrimer via Cycloaddition Reaction with Tripodal Core

  • Lee, Jae-Wook;Kim, Byung-Ku;Kim, Jung-Hwan;Shin, Won-Suk;Jin, Sung-Ho
    • Bulletin of the Korean Chemical Society
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    • 제26권11호
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    • pp.1790-1794
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    • 2005
  • Fréchet-type dendritic benzyl azides were efficiently synthesized using 5-(azidomethyl)-1,3-dihydroxybenzene as an azide focal point functionalized unit by adding a generation to the existing dendron and applied for the construction of dendrimers containing 1,2,3-triazole rings as connectors via click chemistry with a tripodal acetylene core.

Entry to Highly Hindered Chiral β-Amino Triazoles Bearing a gem-Diaryl Group by Azide-alkyne Click Chemistry

  • Sadu, Venkata Subbaiah;Roy, Harendra Nath;Arigala, Pitchaiah;Hwang, In-Taek;Lee, Kee-In
    • Bulletin of the Korean Chemical Society
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    • 제35권6호
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    • pp.1605-1612
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    • 2014
  • Copper(I)-catalyzed Huisgen cycloaddition of terminal alkynes with unmasked azidoamines derived from amino acids is described. The reported strategy provides a new entry to highly hindered ${\beta}$-amino 1,2,3-triazole derivatives bearing a gem-diaryl group, which are potentially valuable entities as molecular catalysts for asymmetric transformations.

아자이드와 알킨의 1,3-쌍극자 고리첨가반응에서 고압이 반응속도에 미치는 영향에 대한 연구 (High Pressure Effects on 1,3-Dipolar Cycloaddition of Azides with Alkynes)

  • 권진주
    • 한국군사과학기술학회지
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    • 제18권6호
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    • pp.736-742
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    • 2015
  • The effect of pressure on 1,3-dipolar cycloaddtion has been studied by means of FT-IR and NMR spectroscopy. Pressure accelerates 1,3-dipolar cycloaddition without solvent or catalyst. This simple and inexpensive method eliminates the need for work-up or purification. The method is expected to be applied to the synthesis of binders for solid rocket propellants.

호모프탈산 무수물과 아조디카르복시산 에스테르 및 알킬리덴카르밤산 에스테르와의 고리화첨가반응 (Cycloaddition of Homophthalic Anhydrides to Azodicarboxylate and Alkylidenecarbamates)

  • 이윤영;김호현;구양모
    • 대한화학회지
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    • 제30권2호
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    • pp.243-247
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    • 1986
  • 호모프탈산 무수물(1또는 2)과 디에틸 아조디카르복시산 및 에틸 아릴메티리덴카르밤산과의 고리화첨가반응을 검토하였다. 전자의 반응에서는 2,3--디에톡시카르보닐-2,3-디히드로-1-히드록시프탈라진들(3 및 4)이 생성되었으며, 후자의 반응에서는 3-아릴-4카르복시-2-에톡시카르보닐-3,4-디히드로-1(2H)-이소퀴놀린온들(5~10)이 생성되었다.

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