@article{ElGazzar1999Cyclo-23040,
  year={1999},
  doi={10.1039/A902505G},
  title={Cycloadditions of 1-aza-2-azoniaallene cations to isothiocyanates},
  number={14},
  issn={0300-922X},
  journal={Journal of the Chemical Society, Perkin Transactions 1},
  pages={1999--2010},
  author={El-Gazzar, Abdel-Rahman B.A and Scholten, Kirsten and Guo, Yiping and Weißenbach, Kerstin and Hitzler, Martin and Roth, Gerhard and Fischer, Helmut and Jochims, Johannes}
}

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    <dc:contributor>Scholten, Kirsten</dc:contributor>
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    <dc:contributor>Fischer, Helmut</dc:contributor>
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    <dc:creator>Scholten, Kirsten</dc:creator>
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    <dc:creator>Guo, Yiping</dc:creator>
    <dc:creator>Weißenbach, Kerstin</dc:creator>
    <dcterms:issued>1999</dcterms:issued>
    <dc:contributor>El-Gazzar, Abdel-Rahman B.A</dc:contributor>
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    <dc:creator>El-Gazzar, Abdel-Rahman B.A</dc:creator>
    <dc:contributor>Hitzler, Martin</dc:contributor>
    <dc:contributor>Roth, Gerhard</dc:contributor>
    <dc:contributor>Guo, Yiping</dc:contributor>
    <dcterms:title>Cycloadditions of 1-aza-2-azoniaallene cations to isothiocyanates</dcterms:title>
    <dc:creator>Roth, Gerhard</dc:creator>
    <dcterms:bibliographicCitation>Journal of the Chemical Society, Perkin Transactions 1 ; 14 (1999). - S. 1999-2010</dcterms:bibliographicCitation>
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    <dc:creator>Hitzler, Martin</dc:creator>
    <dc:contributor>Jochims, Johannes</dc:contributor>
    <dcterms:abstract xml:lang="eng">Isothiocyanates react as S-nucleophiles with 1-aza-2-azoniaallene salts 1 to give different types of 1,3,4-thiadiazolium salts (9, 11, 12) and 1,2,4-triazolium salts (10). Which product is formed, depends on the one hand on the ability of a substituent of the heteroallene salt 1 to undergo a [1,2] shift as a positively charged migrant (generalized Wagner–Meerwein rearrangement) or to act as a cationic leaving group, and on the other hand on Dimroth rearrangement of the initially formed thiadiazolium salt 8 to triazolium salts. The structures of the thiadiazolium salt 9c and the triazolium salt 10d were confirmed by X-ray structural analyses.</dcterms:abstract>
    <dc:creator>Jochims, Johannes</dc:creator>
    <dc:contributor>Weißenbach, Kerstin</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-12T08:04:14Z</dc:date>
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