Electrophilicsubstitutionreactions of sumanene were studied. Mono-, di-, and trisubstituted sumanenes were selectively prepared with the separation of all regioisomers. The regioselectivity was p...
Site-selective cation–π interaction as a way of selective recognition of the caesium cation using sumanene-functionalized ferrocenes
作者:Artur Kasprzak、Hidehiro Sakurai
DOI:10.1039/c9dt03162f
日期:——
The first sumanene–ferrocene probes for efficient and selective caesium cation (Cs+) recognition are reported. The working mechanism of the sumanene moiety as the sensing unit was based on the site-selective cation–πinteraction in its neutral state. The interactions with Cs+ were characterized by high association constant values together with low limits of detection.
Hydroxysumanene was synthesized from acylsumanenes by Baeyer–Villiger oxidation. DFT calculation predicted the higher bowl inversion energy and deeper bowl structure of hydroxysumanene than those of pristine sumanene. The bowl inversion energy of hydroxysumanene was experimentally determined by 2D-EXSY NMR measurement as 21.2 kcal/mol. The energy was larger than that of pristine sumanene (20.3 kcal/mol)