title: Quinoidal tetrazines: formation of a fascinating compound class.
abstract: A series of different N-heterocyclic carbenes (NHCs) were reacted with 3,6-bis(3',5'-dimethylpyrazolyl)-tetrazine in the presence of an inorganic carbonate to provide access to a hitherto unprecedented compound class. The formed tetrazine derivatives bearing the NHC in the 3-position and an oxygen in the 6-position show a quinoidal-like structure, according to physical examinations and X-ray crystallography.
authors.affiliation: Institute of Chemistry, Eötvös LorAnd University, PAzmAny Péter s. 1/A, H-1117 Budapest, Hungary.
authors.forename: Beatrix
authors.initials: B
authors.lastname: Bostai
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Novák
authors.forename: Attila C
authors.initials: AC
authors.lastname: Bényei
authors.forename: András
authors.initials: A
authors.lastname: Kotschy