10.1016/j.inoche.2015.06.014
The research focuses on the synthesis and characterization of luminescent monomeric and polymeric copper(I) halides complexes with 1,2-bis(3,5-dimethylpyrazol-1-ylmethyl)-benzene (dpb) as a ligand. The experiments involved reacting copper(I) bromide and copper(I) iodide with equimolar amounts of dpb in dry toluene to yield the mononuclear complex [CuBr(dpb)] (F2) and the polymeric compound [Cu2I2(dpb)]n (F1), respectively. The complexes were characterized by elemental analysis, 1H NMR spectroscopy, and MALDI-TOF spectroscopy, with crystal structures determined by single-crystal X-ray diffraction methods. The complexes were further analyzed for their UV–vis absorption spectra in CH2Cl2 solution and their photoluminescence properties in the solid state at ambient temperature. Thermogravimetric analysis was also conducted to assess their thermal stability.
10.1039/c3ra45100c
The research focuses on the design and synthesis of cyclic depsipeptides containing triazole (CDPT) rings using click chemistry. The key chemicals involved in this research include Boc-protected amino acids such as Boc–Leu–OH and Boc–Phe–OH, propargyl alcohol, 1,10-carbonyl diimidazole (CDI), trifluoroacetic acid (TFA), 3-azido propionic acid, EDC$HCl, HOBt, and copper(I) bromide. These chemicals play crucial roles in the synthesis process. For instance, CDI is used for esterification, TFA for deprotection, and EDC$HCl/HOBt for peptide coupling. Copper(I) bromide is essential for the Cu-catalyzed alkyne–azide cycloaddition, which forms the triazole ring. The synthesis involves several steps, including the formation of propargyl ester containing dipeptides, linear azido–alkyne depsipeptides, and finally the desired cyclic depsipeptides containing triazole rings. The methodology was optimized and applied to synthesize a library of CDPTs, with yields ranging from 58% to 64%. The synthesized compounds were characterized using various techniques such as 1H-NMR, 13C-NMR, FT-IR, ESI-MS, and HPLC, and the crystal structure of one of the compounds was determined by X-ray diffraction.