Chromogenic charge transfer cleft-type tetrahydrobenzoxanthene enantioselective receptors for dinitrobenzoylamino acids.
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.
Oliva
Ana I
AI
Departamento de Química Orgánica, Plaza de los Caídos 1-5, Universidad de Salamanca, Salamanca, E-37008, Spain.
Simón
Luis
L
Muñiz
Francisco M
FM
Sanz
Francisca
F
Ruiz-Valero
Caridad
C
Morán
Joaquín R
JR
D002863:Chromogenic Compounds; D004136:Dinitrobenzenes / Q000737:chemistry*; D008958:Models, Molecular; D017459:Receptors, Amino Acid / Q000737:chemistry*; D013237:Stereoisomerism; D014966:Xanthenes / Q000737:chemistry*
D002863:Chromogenic Compounds; D004136:Dinitrobenzenes; D017459:Receptors, Amino Acid; D014966:Xanthenes