10.1055/s-0031-1291135
The study focuses on the copper-catalyzed 1,3-dipolar cycloaddition of (arylselanyl)alkynes with benzyl azides, producing a series of novel [(arylselanyl)alkyl]-1,2,3-triazoles. This reaction, known as click chemistry, was performed under mild conditions using copper(II) acetate monohydrate and sodium ascorbate as catalysts. Various substituted benzyl azides, both electron-withdrawing and electron-donating, were reacted with different (arylselanyl)alkynes, yielding high amounts of selenium-containing triazoles. The synthesized compounds show potential for biological applications, expanding the utility of selenium-containing heterocycles in organic chemistry.
10.1002/chem.201504245
The research focuses on the synthesis of mesoionic isoquinoline derivatives, which are significant intermediates for constructing biologically active compounds. The study aims to develop an efficient method for their synthesis through RhIII (rhodium(III)-catalyzed) C-H activation and annulation with alkynes, using oxygen as an internal anion source. The researchers concluded that this approach is simple, efficient, and has a broad substrate scope, leading to the preparation of unique mesoionic isoquinoline salts for the first time. The chemicals used in the process include hydroxyl-substituted benzaldimines as substrates, alkynes, [{Cp*RhCl2}2] as the catalyst, Cu(OAc)2·H2O as an additive, TsOH (p-toluenesulfonic acid) as an acid, and various solvents such as ethanol, methanol, and dichloromethane for the reaction and purification steps. The study also explored the effects of different substituents on the benzaldimines and alkynes, demonstrating the versatility of the method. The researchers are further investigating the catalytic mechanism and potential applications of this coupling reaction in the synthesis of complex molecules and the synthetic utility of the mesoionic isoquinoline derivatives.
10.1080/15421400802714098
The study focuses on the synthesis and characterization of Copper(II) and Nickel(II) complexes of a tetradentate Schiff base ligand containing an N,N′-Bis(Salicylidene)Dodecane-1,10-Diamine core. The research investigates the self-assembly and liquid-crystalline properties of these complexes using variable temperature powder X-ray diffraction. The study explores the relationship between the molecular shape and the mesogenic performances, and discusses the potential applications of these molecular materials in the field of magnetic molecule-based devices. The results show that the complexes exhibit thermotropic liquid crystalline behavior, and the influence of the metal center on the mesomorphic properties is also discussed. The study contributes to the development of new functional liquid crystals for use in molecule-based magnetic devices.