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Structure of Azo Coupling Products of 5-Nitro-2,1-benzisothiazole-3-diazonium Hydrogenesulphate with Aromatic Amines

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F06%3A00004643" target="_blank" >RIV/00216275:25310/06:00004643 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216275:25310/07:00006422

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Structure of Azo Coupling Products of 5-Nitro-2,1-benzisothiazole-3-diazonium Hydrogenesulphate with Aromatic Amines

  • Original language description

    The reaction of 3-diazonium-5-nitro-2,1-benzisothiazole with N-substituted anilines produces 1-(5-Nitro-2,1-benzisothiazol-3-yl)-3,3-disubstituted triazenes. These triazenes are considerably stable, and even in strongly acidic medium (0.5 mol.l-1 H2SO4)they are only slowly decomposed back to the diazonium ion and substituted anilinium ion (for the N-ethyl derivative in 0.5 mol.l-1 H2SO4 at 25 °C t(1/2) ca 7 h). A series of 6 triazenes were characterised by their 1H and 13C NMR spectra and mass spectra.Two of the triazenes were identified by means of X-ray.

  • Czech name

    Structura Azo kopulačních produktů 5-Nitro-2,1-benzisothiazol-3-diazonium Hydrogensulphatu s aromatickými aminy

  • Czech description

    Reakcí 3-diazonium-5-nitro-2,1-benzisothiazolu s N-substituovanými aniliny byly získány 1-(5-Nitro-2,1-benzisothiazol-3-yl)-3,3-disubstituované triazeny. Tyto triazeny jsou neobvykle stabilní, v silně kyselém prostředí (0.5 mol.l-1 H2SO4) se jen pomalu rozkládají za vzniku diazoniového iontu a substituovného aniliniového iontu (pro N-ethylsubstituovaný derivát v 0.5 mol.l-1 H2SO4 a při 25 °C vykazuje poločas rozpadu t(1/2) ca 7 hod.). Serie 6 triazenů byla charakterisována 1H a 13C NMR spektry, a hmotnostními spektry. Dva z triazenů byly identifikovámy totálními spektry X-ray.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CC - Organic chemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Dyes and Pigments

  • ISSN

    0143-7208

  • e-ISSN

  • Volume of the periodical

  • Issue of the periodical within the volume

    00

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    11

  • Pages from-to

    392-402

  • UT code for WoS article

  • EID of the result in the Scopus database