Very Strong Organosuperbases Formed by Combining Imidazole and Guanidine Bases: Synthesis, Structure, and Basicity (CROSBI ID 198610)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Vazdar, Katarina ; Kunetskiy, Roman ; Saame, Jaan ; Kaupmees, Karl ; Leito, Ivo ; Jahn, Ullrich
engleski
Very Strong Organosuperbases Formed by Combining Imidazole and Guanidine Bases: Synthesis, Structure, and Basicity
New structural motives for organosuperbases, that are easy to prepare and highly basic are urgently required in many areas of chemistry. The synthesis of N, N’-bis(imidazolyl)guanidine bases (BIG bases) is reported. Their pKa values are determined as 26.1–29.3 in THF. They are thus probably the strongest phosphorous-free organic bases both in solution and in the gas phase. Calculations help to determining the structural and electronic factors giving rise to the high basicity.
guanidine; organosuperbases; synthetic methods; basicity; UV/Vis spectroscopy
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Podaci o izdanju
53 (5)
2014.
1435-1438
objavljeno
1433-7851
10.1002/anie.201307212