• 제목/요약/키워드: Tetrazole

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Synthetic Studies on the Nucleophilic Addition of 1-Methyl-5-mercapto-1,2,3,4-tetrazole to Vinylsulfilimines (Vinylsulfilimine유도체에 대한 1-methyl-5-mercapto-1,2,3,4-tetrazole의 친핵성 첨가물에 관한 연구)

  • Tae-Rin Kim;So-Young Lee;Sang-Yong Pyun
    • Journal of the Korean Chemical Society
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    • v.36 no.2
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    • pp.318-323
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    • 1992
  • Following seven new nucleophilic adducts of sulfilimine compounds were prepared by the addition of 1-methyl-5-mercapto-1,2,3,4-tetrazole to vinylsulfilimine derivatives; S-Phenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-tolyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-m-tolyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-chlorophenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-bromophenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine, S-p-methoxyphenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine and S-p-nitrophenyl-S-2-(1-methyl-1,2,3,4-tetrazole-5-thio)-ethyl-N-p-tosylsulfilimine. The structures of these adducts were confirmed by elemental analyses, MP, UV, IR-and NMR-Spectra.

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Synthesis of Tetrazole-containing Energetic Copolymers (테트라졸을 포함한 에너지 함유 공중합체의 합성)

  • Shin, Jung-Ah
    • Journal of the Korea Institute of Military Science and Technology
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    • v.14 no.4
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    • pp.726-731
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    • 2011
  • Polymers containing tetrazole groups are very attractive as energetic materials. Copolymer having tetrazole groups could be obtained by 3-steps from commercially available epichlorohydrin. These methods provide a new synthetic pathway to construct polymers containing tetrazole groups from non-energetic polynitrile compounds. These polymers are expected to be good candidates for green and high energetic materials.

Synthesis of Polymers Including Both Triazole and Tetrazole by Click Reaction

  • Shin, Jung-Ah;Lim, Yeong-Gweon;Lee, Kyung-Hee
    • Bulletin of the Korean Chemical Society
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    • v.32 no.2
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    • pp.547-552
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    • 2011
  • Azido contained polymers were treated with various substituted N-propargyl tetrazoles in $CH_2Cl_2/H_2O$ at room temperature by Cu-catalyzed [2+3] cycloaddition to afford high yields of the corresponding polymers, possessing both triazole and tetrazole moiety.

The Mechanism in the Photolysis of 5-Phenyl-tetrazole Derivatives (5-Phenyl-tetrazole의 光分解反應과 그 메카니즘에 관한 硏究)

  • Chae, Young-Bok;Chang, Kyung-Soo;Kim, Sung-Soo
    • Journal of the Korean Chemical Society
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    • v.11 no.3
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    • pp.85-88
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    • 1967
  • The main object of this experiment is to provide a systematic approach to the reaction mechanism in the photolysis of 5-phenyl-1,2,3,4-tetrazole during which the formation of C-phenyl-nitrile-imine of 1.3-dipole was expected. So the occurrence of 1,3-dipole-addition was examined but not observed despite the formation of nitrile-imine. 3,6-diphenyl-1,2,4,5-tetrazine (IV); 3,6-diphenyl-1,4-dihydro-1,2,4,5-tetrazine (III); 3,5-diphenyl-1,2,4-triazole; 4-amino-3,5-diphenyl-1,2,4-triazole; benzonitrile; ammonia and nitrogen were isolated as final products of this reaction.

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A New Method for Synthesizing Tetrazoles from Secondary Amines using Trichloroacetonitrile (이차 아민으로부터 트리클로로아세토니트릴을 사용한 테트라졸 유도체의 새로운 합성법)

  • Oh, Su-Jin
    • Journal of the Korea Institute of Military Science and Technology
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    • v.20 no.6
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    • pp.781-787
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    • 2017
  • A new method for synthesizing the tetrazole derivatives from secondary amines through cyanation/tetrazolation has been developed. Trichloroacetonitrile is used as the cyano source to synthesize N-nitrile instead of highly toxic and expensive cyanogen bromide. In this protocol, the reaction of secondary amines with various substituents proceed smoothly, and the desired tetrazole derivatives are obtained directly in fair to high yields without isolation of intermediate cyanamides.

Removal of textile dyes in wastewater using polyelectrolytes containing tetrazole groups

  • Caldera-Villalobos, Martin;Pelaez-Cid, Alejandra-Alicia;Martins-Alho, Miriam-Amelia;Herrera-Gonzalez, Ana-Maria
    • Korean Journal of Chemical Engineering
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    • v.35 no.12
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    • pp.2394-2402
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    • 2018
  • Textile dyes are some of the pollutants which have received the most attention because of the large volume of wastewater generated by the textile industry. Removal by means of adsorption is one of the most versatile alternatives to treat these effluents. Even though different adsorbents such as activated carbons and mineral materials have been proposed, polymeric adsorbents are a viable alternative. This work reports for the first time the use of polyelectrolyte PTZ and macroelectrolyte MTZ containing tetrazole groups as adsorbents useful in the textile dyes removal present in aqueous solutions and wastewater. Because of the anionic character of the tetrazole group, MTZ exhibits selective adsorption capabilities for cationic dyes of up to $156.25mg{\cdot}g^{-1}$. The kinetic study of the process of adsorption shows that PTZ and MTZ fit a pseudo second-order model. MTZ also shows utility as a flocculant agent in the treatment of wastewater containing dyes Indigo Blue and Reactive Black. The results showed that PTZ and MTZ may be used in the treatment of wastewater in a process of coagulation-flocculation followed by the treatment by adsorption. This two-stage treatment removed up to 95% of the dye present in the wastewater. As well as removing the dyes, the values for COD, suspended solids, pH, and color of the wastewater decreased, thus significantly improving its quality.

A Facile One-Pot Synthesis of 1-Substituted Tetrazole-5-thiones and 1-Substituted 5-Alkyl(aryl)sulfanyltetrazoles from Organic Isothiocyanates

  • Han, Sam-Yong;Lee, Je-Woo;Kim, Hee-Jung;Kim, Yong-Joo;Lee, Soon-W.;Gyoung, Young-Soo
    • Bulletin of the Korean Chemical Society
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    • v.33 no.1
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    • pp.55-59
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    • 2012
  • Treatments of organic isothiocyanates (R-NCS) with $NaN_3$ in the presence of pyridine in water at room temperature gave corresponding various organic tetrazole-thiones, [$S=CN_4(R)$] (R = alkyl or aryl). Isolated products are obtained as white or yellow solids in good yields (76-97%). The molecular structure by X-ray diffraction study for one of products shows the proposed formation. In addition, one-pot synthesis of 1-substituted 5-alkyl(or aryl)sulfanyltetrazoles has been demonstrated. Addition of alkyl or aryl halides into the mixture of organic isothiocyanates, $NaN_3$, and pyridine in water at room temperature exclusively formed 1-substituted 5-alkyl(or aryl)sulfanyltetrazoles (S-derivatives) in high yields.