Synthesis and application of a novel bis-1,2,3-triazole ligand containing a 2,2'-bipyrrolidine core
作者:Stephen E. Motika、Xiaodong Shi
DOI:10.24820/ark.5550190.p010.320
日期:——
generated in good yield through several synthetic steps. To investigate the potential for the application of this ligand in transition metal catalysis, we generated a bis-Au(I) complex in nearly quantitative yield and examined its reactivity in the context of alkyne hydration. Both alkyl and aryl terminal alkynes could be efficiently converted to their corresponding ketones in nearly quantitative yields
The Synthesis of 1,2,3-Triazoles from Nitroalkenes - Revisited
作者:Béatrice Quiclet-Sire、Samir Z. Zard
DOI:10.1055/s-2005-918463
日期:——
Nitroalkenes or vicinal acetoxy nitro derivatives undergo a clean reaction with sodium azide in hot dimethyl sulfoxide to give the corresponding 1,2,3-triazoles in good yield.
In this paper, an elegant synthesis of 1,2,3-triazole derivatives via domino [3 + 2] azide cycloaddition and denitration reaction sequence under catalyst free conditions has been described. Treatment of Baylis–Hillmanadducts and their cyclic derivatives from nitroolefins with sodium azide in the absence of catalyst smoothly afforded the 1,2,3-triazole derivatives in excellent yields.
Reaction between nitrogen‐centered radicals and unsaturated C−C bonds is an effective synthetic strategy for the construction of nitrogen‐containing molecules. Although the reactions between nitrogen‐centered radicals and alkenes have been studied extensively, their counterpart reactions with alkynes are extremely rare. Herein, the first example of reactions between azidylradicals and alkynes is described
Triazole-imidazole (TA-IM) derivatives as ultrafast fluorescent probes for selective Ag<sup>+</sup>detection
作者:Qi Lai、Qing Liu、Ying He、Kai Zhao、Chiyu Wei、Lukasz Wojtas、Xiaodong Shi、Zhiguang Song
DOI:10.1039/c8ob02482k
日期:——
3-Triazole-imidazole derivatives (TA-IM) were prepared as fluorescentprobes for silver ion detection. The design principle is the incorporation of an intramolecular H-bond between the imidazole and triazole moiety that enables a co-planar conformation to achieve fluorescence emission in the UV-blue range. Screening of different metal ions revealed excellent bindingaffinity of this new class of compounds toward silver