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4,5-Disubstituted N,N′-Di-tert-alkyl Imidazolium Salts: New Synthesis and Structural Features

Authors

  • Anastasia A. Grishina,

    1. Institute of Organic Chemistry and Biochemistry Academy of Sciences of the Czech Republic, v. v. i., Flemingovo nam. 2, 16610 Prague 6 (Czech Republic), Fax: (+420) 220183578
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  • Dr. Svetlana M. Polyakova,

    Corresponding author
    1. Institute of Organic Chemistry and Biochemistry Academy of Sciences of the Czech Republic, v. v. i., Flemingovo nam. 2, 16610 Prague 6 (Czech Republic), Fax: (+420) 220183578
    • Institute of Organic Chemistry and Biochemistry Academy of Sciences of the Czech Republic, v. v. i., Flemingovo nam. 2, 16610 Prague 6 (Czech Republic), Fax: (+420) 220183578
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  • Roman A. Kunetskiy,

    1. Institute of Organic Chemistry and Biochemistry Academy of Sciences of the Czech Republic, v. v. i., Flemingovo nam. 2, 16610 Prague 6 (Czech Republic), Fax: (+420) 220183578
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  • Dr. Ivana Císařová,

    1. Department of Inorganic Chemistry, Charles University, Hlavova 2030, 12840 Prague 2 (Czech Republic)
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  • Dr. Ilya M. Lyapkalo

    1. Institute of Organic Chemistry and Biochemistry Academy of Sciences of the Czech Republic, v. v. i., Flemingovo nam. 2, 16610 Prague 6 (Czech Republic), Fax: (+420) 220183578
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    • Deceased, September 10, 2010.


Abstract

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It's getting crowded! The synthesis of a new subfamily of imidazolium cations with exceptionally spatially demanding substitution patterns (see scheme) paved the way to reconcile two antagonising effects: steric hindrance and innately high donating ability/basicity in the peralkylated imidazol-2-ylidene ligands/uncharged bases.

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