作者:Mercedes Crego、César Raposo、Ma Cruz Caballero、Estrella García、Javier G. Saez、Joaquín R. Morán
DOI:10.1016/s0040-4039(00)60209-5
日期:1992.11
dinitrotoluic residue has been introduced onto an hydrogen bonding aromaticacid receptor to achieve stacking and charge-transfer interactions. This new receptor shows large differences in association constants with aromatic guests in CDCl3 ranging from 1.6 × 103 with isophthalic acid methyl ester to 1.5 × 106 with p-dimethylamino benzoic acid.
作者:Mercedes Crego、J.José Marugán、César Raposo、Ma José Sanz、Victoria Alcázar、Ma Cruz Caballero、Joaquín R. Morán
DOI:10.1016/s0040-4039(00)79900-x
日期:1991.8
Three cleft type hydrogen bonding receptors were prepared, with slightly different geometries due to the presence of either methylene, oxygen, or sulfur. All three are able to complex urea, one with the methylene group being the best suited. Benzyl formamide, probably due to its smaller cleft, is better associated to the oxygen compound.