Calix[2]bipyrrole[2]furan and calix[2]bipyrrole[2]thiophene: new pyrrolic receptors exhibiting a preference for carboxylate anions.
Heterocycles other than pyrrole, specifically bipyrrole, furan, and thiophene, have been used to construct two new, calixpyrrole-like anion receptors; binding studies, carried out by ITC in CH3CN, reveal a selectivity for "Y-shaped" anions, such as benzoate, over spherical ones, such as chloride.
Department of Chemistry and Biochemistry, Institute for Cellular and Molecular Biology, The University of Texas at Austin, 1 University Station-A5300, Austin, Texas 78712-0165, USA. sessler@mail.utexas.edu
Jonathan L
JL
Sessler
Deqiang
D
An
Won-Seob
WS
Cho
Vincent
V
Lynch
D000838:Anions; D047250:Calixarenes; D002151:Calorimetry / Q000379:methods; D002264:Carboxylic Acids / Q000737:chemistry*; D005663:Furans / Q000138:chemical synthesis / Q000737:chemistry*; D015394:Molecular Structure; D011758:Pyrroles / Q000138:chemical synthesis / Q000737:chemistry*; D013876:Thiophenes / Q000138:chemical synthesis / Q000737:chemistry*; D014961:X-Ray Diffraction
D000838:Anions; C480765:Calix(2)bipyrrole(2)furan; D002264:Carboxylic Acids; D005663:Furans; D011758:Pyrroles; D013876:Thiophenes; C480764:calix(2)bipyrrole(2)thiophene; D047250:Calixarenes