Supramolecular coordination assemblies constructed from multifunctional azole-containing carboxylic acids.

Dielectric properties of supramolecular ionic structures obtained from multifunctional carboxylic acids and amines

Molecular-oxygen-promoted Cu-catalyzed oxidative direct amidation of nonactivated carboxylic acids with azoles

A copper-catalyzed oxidative direct formation of amides from nonactivated carboxylic acids and azoles with dioxygen as an activating reagent is reported. The azole amides were produced in good to excellent yields with a broad substrate scope. The mechanistic studies reveal that oxygen plays an essential role in the success of the amidation reactions with copper peroxycarboxylate as the key inte...

Formation of fluorescent supramolecular polymeric assemblies via orthogonal pillar[5]arene-based molecular recognition and metal ion coordination.

A fluorescent supramolecular polymer was efficiently constructed by pillar[5]arene-based host-guest molecular recognition and zinc ion coordination.

Tuning 1-D Pb(II) Coordination Polymers by Flexible and Semirigid Dicarboxylates: Synthesis, Structure and Properties

Two new one-dimensional (1-D) Pb(II) coordination polymers, namely, [Pb(3-pdip)(L)]·H2O (1) and [Pb(3-pdip)(L2)] (2) [LH2 = 1,6-hexanedioic acid, LH2 = homophthalic acid, 3-pdip = 2-(3-pyridyl)imidazo[4,5-f]1,10-phenanthroline] have been obtained from hydrothermal reactions of Pb(II) nitrate with the phenanthroline derivative and the two dicarboxylic acids. Single-crystal X-ray diffraction anal...

Carboxylic acid functionalized ortho-linked oxacalix[2]benzene[2]pyrazine: synthesis, structure, hydrogen bond and metal directed self-assembly.

Cyclooligomerization of 2,6-dichloropyrazine 4 and benzyl 2,3-dihydroxybenzoate 5 under microwave irradiation resulted in a racemic pair of ester functionalized ortho-linked oxacalix[2]benzene[2]pyrazine 6, which was further transformed to the corresponding racemic carboxylic acid functionalized ortho-linked oxacalix[2]benzene[2]pyrazine 3. Both enantiomers of 3 adopt 1,3-alternate conformation...