Affiliation:
1. Institut für Organische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg/Sachsen, Germany
Abstract
Abstract
Sixteen new bisurea compounds incorporating versatile proteinogenic amino acids as well as nipecotic acid have been synthesized via addition reaction to aryl diisocyanates. The products were analytically characterized and their ability for anion recognition was studied by UV/Vis spectroscopy. In the presence of fluoride, acetate or dihydrogenphosphate ions, hyperchromic and bathochromic peak shifts were determined. By way of contrast, bromide, iodide, or hydrogensulfate ions cause no significant change of absorbance. The special effect of heterocyclic derivatives was explained by molecular modeling calculations. In addition, the crystal structure of the byproduct dimethyl N,N′-(1,4-phenylene)dicarbamate is discussed.
Reference58 articles.
1. A. Bianchi, K. Bowman-James, E. Garcia-España (Eds.), Supramolecular Chemistry of Anions, John Wiley, New York, 1997.
2. P. A. Gale, Coord. Chem. Rev.2001, 213, 79.
3. P. D. Beer, P. A. Gale, Angew. Chem. Int. Ed.2001, 40, 486.
4. P. A. Gale, Coord. Chem. Rev.2003, 240, 191.
5. I. Stibor (Ed.), Anion Sensing, Topics in Current Chemistry, Vol. 255, Springer-Verlag, Berlin-Heidelberg, 2005.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献