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4,5‐Disubstituted N , N′ ‐Di‐ tert ‐alkyl Imidazolium Salts: New Synthesis and Structural Features
Author(s) -
Grishina Anastasia A.,
Polyakova Svetlana M.,
Kunetskiy Roman A.,
Císařová Ivana,
Lyapkalo Ilya M.
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201002805
Subject(s) - steric effects , substitution (logic) , alkyl , chemistry , scheme (mathematics) , stereochemistry , combinatorial chemistry , computer science , organic chemistry , mathematics , programming language , mathematical analysis
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.