title: Conformationally switchable non-cyclic tetrapyrrole receptors: synthesis of tetrakis(1H-pyrrole-2-carbaldehyde) derivatives and their anion binding properties.
abstract: A series of tetrakis(1H-pyrrole-2-carbaldehyde) receptors (2, 4, and 6) were synthesized in two steps from commercially available starting materials. The anion binding properties of these receptors can be tuned through electronic switching to stabilize a conformation displaying high affinity for the dihydrogenphosphate and pyrophosphate anions (as the tetrabutylammonium salts) in chloroform.
authors.affiliation: Department of Chemistry, The University of Texas at Austin, Texas 78712-1224, USA. sessler@cm.utexas.edu.
authors.forename: Murat K
authors.initials: MK
authors.lastname: Deliomeroglu
authors.forename: Vincent M
authors.initials: VM
authors.lastname: Lynch
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Sessler
mesh_terms: D018360:Crystallography, X-Ray; D008958:Models, Molecular; D008968:Molecular Conformation; D010710:Phosphates / Q000032:analysis*; D011758:Pyrroles / Q000138:chemical synthesis / Q000737:chemistry*; D013053:Spectrophotometry; D045725:Tetrapyrroles / Q000737:chemistry*
chemical_list: D010710:Phosphates; D011758:Pyrroles; D045725:Tetrapyrroles; C051266:pyrrole-2-carboxaldehyde