An exceptionally simple and unexpected ‘one-pot’ synthesis of the hitherto unknown 4,6-diazasemibullvalene derivatives (5) is achieved by reaction of the chloro-2-aza-1,3-dienes (2) with tetracyanoethylene; the structure of one of the products (5) has been determined by X-ray crystallography.
J. Barluenga, F. J. González, S. Fustero, X. Solans and M. V. Domenech, J. Chem. Soc., Chem. Commun., 1990, 1057 DOI: 10.1039/C39900001057
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