1417862-50-0Relevant articles and documents
Synthesis and UV/Vis analysis of amino acid-derived bisurea-type receptors involving anion complexation
Stapf, Manuel,Seichter, Wilhelm,Weber, Edwin
, p. 409 - 419 (2015)
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.
Synthesis of the bifunctional ligand N,N'-[1,4-phenylenebis(iminocarbonyl)] di(L-phenylalanine) and crystal structure of its supramolecular coordination polymer with lead(II)
Stapf, Manuel,Boehle, Tony,Seichter, Wilhelm,Mertens, Florian O. R. L.,Weber, Edwin
, p. 1166 - 1172 (2013/01/15)
The new linker-type ligand 1, featuring two L-phenylalanine-terminated urea moieties attached to the para positions of a central phenylene unit has been synthesized. Its coordination polymer formed with lead(II) and containing DMF and water as solvent mol