Synthesis of Inclusion Compounds of Br–Th–Py–Br and (RO)2B–Th–Py–Br (Th: Thiophene-2,5-diyl; Py: Pyridine-2,5-diyl) with γ-Cyclodextrin

Abstract

Abstract Inclusion compounds of Br–Th–Py–Br and (RO)2B–Th–Py–Br ((OR)2: –OCH2C(CH3)2CH2O–) with γ-cyclodextrin (CD), denoted by Br–ThPy–Br–CD and (RO)2B–ThPy–Br–CD, respectively, were prepared. Ni(0)-promoted dehalogenative coupling of Br–ThPy–Br–CD gave an oligomeric inclusion product, Oligo(ThPy–CD). Oligo(ThPy–CD) was soluble in organic solvents, and 1H- and CP/MAS 13C{1H} NMR spectra as well as the powder XRD pattern of Oligo(ThPy–CD) supported the CD-encapsulated structure.