A highly diastereoselective synthesis of deep molecular baskets

We describe a preparative method for directing Mizoroki-Heck cyclotrimerization of enantioenriched bromonorbornenes into molecular baskets having increasingly deeper and extendable aromatic cavities. Such diastereoselective cyclotrimerizations of the bromo-olefinic substrates resulted from prevalent β migratory insertions without the formation of palladacycle intermediate(s). The facile access to multigram quantity of a new series of basket-like hosts clears the way for creating novel supramolecular materials for storage, sequestration and catalysis.

Application of cup-shaped trilactams for selective extraction of volatile compounds by gas chromatography-mass spectrometry

Chiral cup-shaped trilactams were used as liquid phase extraction material of volatile organic compounds in perfume analyzed by SPME GC-MS. (+)-material showed higher selective chiral recognition with oxygenated and cyclic volatile compounds.

Concise Total Synthesis of (±)-Deguelin and (±)-Tephrosin Using a Vinyl Iodide as a Key Building Block

A concise and protecting-group-free total synthesis of the antiproliferative natural product (±)-deguelin (2) was accomplished in four steps and 62% overall yield from commercially available precursors. The key transformation employed a vinyl iodide as the pivotal building block to construct the 4-acylchromene substructure present in deguelin. Subsequent Cu₂O-mediated α-hydroxylation of deguelin (2) afforded tephrosin (3) in 90% yield.

On the copper(ii) binding of asymmetrically functionalized tripodal peptides: solution equilibrium, structure, and enzyme mimicking

The increasing histidyl functionalisation of tren results in the fundamental impact on the structure, stability and catecholase activity of its copper(ii) complexes.

Beckmann Rearrangement of 3-carboxybicyclo[3.3.1]nonane and [3.2.1]octane Oximes

Regiospecific Beckmann rearrangement of substituted 2-hydroximinonorbornanone carboxylic acids has been investigated. Selective formation of new functionalized 10-oxo-9-azabicyclo[3.3.2]decanes and 7-oxo-6-azabicyclo[3.2.2]nonanes in good yield has been demonstrated. Presence of neighboring carboxylic group allows conducting of Beckmann rearrangement of strained bicyclic compounds.

A novel 2D infinite M3L2 cage-based Cd(ii) microporous coordination polymer with a tripodal carboxylic acid ligand and solvent-dependent luminescence properties

A novel M₃L₂ cage-based microporous coordination polymer has an obvious, surface-enhanced luminescence in the solvents CH₂Cl₂ and CHCl₃.

Controlling the assembly of cyclotriveratrylene-derived coordination cages

Ligand-functionalised cyclotriveratrylene derivatives self-assemble to afford coordination cages and topologically non-trivial constructs, including controlled assembly of M₃L₂ metallo-cryptophane and M₆L₈ cages.