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A macrocyclic silver polycarbene complex based on 1,2,4-triazole units: synthesis and postsynthetic modification†
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-02-12 00:00:00 , DOI: 10.1039/c8dt00169c
Le Zhang 1, 2, 3, 4, 5 , Ying-Feng Han 1, 2, 3, 4, 5
Affiliation  

Facile synthesis and postsynthetic modification of a rectangular 1,2,4-triazole-based NHC macrocycle have been developed. The silver complex [Ag2(1)2](BF4)2 is derived from the corresponding triazole salt H2-1(BF4)2 upon reaction with Ag2O. The structure of the metallocyclic Ag–NHC complex [Ag2(1)2](BF4)2 was determined by single-crystal X-ray diffraction analysis. The metal–carbene template undergoes photodimerisation of its terminal cinnamic esters (UV irradiation, λ = 365 nm) and generates a macrocyclic tetra (NHC) ligand. The desired tetra-1,2,4-triazole macrocycle was isolated in good yield by eliminating the metal ions from the photodimerisation product. All complexes were fully characterized by multinuclear NMR measurements (1H, 13C{1H}, COSY, HSQC and HMBC) and ESI mass spectroscopy.

中文翻译:

基于1,2,4-三唑单元的大环银多碳烯配合物:合成和后合成修饰

已经开发了基于矩形1,2,4-三唑的NHC大环化合物的简便合成和合成后修饰。银络合物将[Ag 212 ](BF 42从相应的三唑盐ħ衍生2 - 1(BF 42在反应时有Ag 2 O的metallocyclic的Ag-NHC络合物[Ag的结构212 ](BF 42通过单晶X射线衍射分析确定。金属-卡宾模板对其末端的肉桂酸酯进行光二聚(紫外线照射,λ = 365 nm),并生成大环四(NHC)配体。通过从光二聚产物中消除金属离子,以高收率分离出所需的四,1,2,4-三唑大环。所有复合物均通过多核NMR测量(1 H,13 C { 1 H},COSY,HSQC和HMBC)和ESI质谱进行了全面表征。
更新日期:2018-02-12
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