Synthesis and characterization of a new photoinduced switchable β-cyclodextrin dimer.

This paper reports an efficient preparation of bridged bis-β-CD AZO-CDim 1 bearing azobenzene as a linker and exhibiting high solubility in water. The photoisomerization properties were studied by UV-vis and HPLC and supported by ab initio calculations. The cis/trans ratio of AZO-CDim 1 is 7:93 without irradiation and 37:63 after 120 min of irradiation at 365 nm; the reaction is reversible after irradiation at 254 nm.

A cyclodextrin dimer as a supramolecular reaction platform for aqueous organometallic catalysis.

A reaction platform based on a cyclodextrin dimer, which is able to simultaneously include a substrate in one cavity and an organometallic catalyst into the other, proved to be highly efficient for aqueous hydroformylation reaction of higher olefins.

Using click chemistry to access mono- and ditopic β-cyclodextrin hosts substituted by chiral amino acids.

A wide range of chiral mono- and ditopic cyclodextrin-based receptors have been synthesized by CuI-catalyzed azide-alkyne cycloaddition starting from mono-6-azido-β-cyclodextrin and chiral amino acids. Of interest, microwaves proved very efficient to access a wide range of ditopic β-cyclodextrin receptors with quantitative yields.