Synthesis, structure and catalytic properties of [Ru(dppp)2(CH3CN)Cl][BPh4] and isolation of catalytically active [Ru(dppp)2Cl][BPh4]: ruthenium catalysed alkyne homocoupling and tandem alkyne–azide cycloaddition
ABSTRACT An efficient [Cu]-catalyzedhomocoupling of 1,1-dibromoalk-1-enes is described for the synthesis of symmetrical 1,3-diyines. The method showed good substrate scope and amenable to aryl and heteroaryl systems. Significantly, the strategy was also successfully applied to the sequential one-pot synthesis of triazoles. GRAPHICAL ABSTRACT
Highly Efficient Cycloaddition Reaction of 1,3-Diynes with Sodium Azide: A New Way to 5-Substituted-4-acetylene-1<i>H</i>-1,2,3-triazoles
作者:Jia-Liang Tang、Ling Ming、Xiao-Ming Zhao
DOI:10.1002/jhet.1950
日期:2016.9
A cycloaddition reaction of a range of 1,3‐diynes with sodium azide has been realized, which provided 5‐substituted‐4‐acetylene‐1H‐1,2,3‐triazoles in 75–99% yields. The chemical structures of the new compounds 3 are established by IR, NMR, Mass, and HRMS.
已经实现了一系列1,3-二炔与叠氮化钠的环加成反应,该反应以75-99%的产率提供了5-取代的-4-乙炔-1 H -1,2,3-三唑。通过IR,NMR,Mass和HRMS确定新化合物3的化学结构。