title: Chromogenic charge transfer cleft-type tetrahydrobenzoxanthene enantioselective receptors for dinitrobenzoylamino acids.
abstract: A combination of a benzoxanthene cleft-type receptor with an electron-rich aromatic ring capable of establishing charge-tranfer interactions provides enantioselective receptors for dinitrobenzoylamino acids. Racemic mixtures of the receptor can be resolved with TLCs impregnated with the guest. The structure of the complexes has been established in an X-ray study. Enantiomeric amino acids provide complexes with different colors.
authors.affiliation: Departamento de Química Orgánica, Plaza de los Caídos 1-5, Universidad de Salamanca, Salamanca, E-37008, Spain.
authors.forename: Ana I
authors.initials: AI
authors.lastname: Oliva
authors.forename: Luis
authors.initials: L
authors.lastname: Simón
authors.forename: Francisco M
authors.initials: FM
authors.lastname: Muñiz
authors.forename: Francisca
authors.initials: F
authors.lastname: Sanz
authors.forename: Caridad
authors.initials: C
authors.lastname: Ruiz-Valero
authors.forename: Joaquín R
authors.initials: JR
authors.lastname: Morán
mesh_terms: D002863:Chromogenic Compounds; D004136:Dinitrobenzenes / Q000737:chemistry*; D008958:Models, Molecular; D017459:Receptors, Amino Acid / Q000737:chemistry*; D013237:Stereoisomerism; D014966:Xanthenes / Q000737:chemistry*
chemical_list: D002863:Chromogenic Compounds; D004136:Dinitrobenzenes; D017459:Receptors, Amino Acid; D014966:Xanthenes