Copper(II)-Catalyzed Aerobic Oxidative Synthesis of Substituted 1,2,3- and 1,2,4-Triazoles from Bisarylhydrazones via C–H Functionalization/C–C/N–N/C–N Bonds Formation
作者:Murali Mohan Guru、Tharmalingam Punniyamurthy
DOI:10.1021/jo300592t
日期:2012.6.1
An unprecedented copper(II)-catalyzed aerobic oxidative synthesis of 2,4,5-triary1-1,2,3-triazoles and 1,3,5-triaryl-1,2,4-triazoles from bisarylhydrazones as the common starting precursor has been achieved via cascade C-H functionalization/C-C/N-N/C-N bonds formation under mild reaction conditions. One of the enthralling outcomes of this strategy is the copper(II)-catalyzed room temperature C-H functionalization/C-N bond formation in presence of air, which has been accomplished during the synthesis of substituted 1,2,4-triazoles. This new class of compounds could give prospective luminescence as an iconic component in the area of pharmaceutical and biological sciences. The intermediates for both the processes have been isolated to elucidate the mechanistic scenario.
Design and synthesis of photoluminescent active interpenetrating metal–organic frameworks using<i>N</i>-2-aryl-1,2,3-triazole ligands
作者:Jingyang Li、Ying He、Li Wang、Qinhe Pan、Zhiguang Song、Xiaodong Shi
DOI:10.1039/d0dt00933d
日期:——
3-triazole derivatives were synthesized as new ligand systems for the construction of photoluminescent active metal-organicframeworks (MOFs). Crystal structures revealed that the five-membered triazoles show an unsymmetrical conformation with the two C4,C5-substituted benzenes adopting a "twisted-planar" geometry. As a result, a MOF constructed from this ligand exhibited cross-layer interactions with improved