作者:A. V. Lebedev、V. D. Sheludyakov、A. B. Lebedeva、A. Yu. Frolov、V. V. Shatunov、O. L. Ustinova、E. A. Kovaleva
DOI:10.1134/s1070363207060230
日期:2007.6
The reaction of N-trimethylsilylimidazole with alkyl chloroacetates is studied. This process yields a mixture of N-alkylation and quarternization products in the ratio dependent on the reaction conditions. The reaction mechanism is discussed. H-1 NMR data show that high melting point and low solubility of 1-imidazolylacetic acid in organic solvents are evidently caused by the formation of strong intermolecular hydrogen bonds, whereas in water zwitterionic structures with the protonation of both nitrogen atoms are formed.