Copper-Mediated Direct Cross-Coupling of 1,3,4-Oxadiazoles and Oxazoles with Terminal Alkynes
作者:Masanori Kitahara、Koji Hirano、Hayato Tsurugi、Tetsuya Satoh、Masahiro Miura
DOI:10.1002/chem.200902916
日期:2010.2.8
The simplest coupling: Copper‐mediated direct oxidative cross‐coupling of 1,3,4‐oxadiazoles and oxazoles with terminal alkynes proceeds through cleavage of sp2 CH and sp CH bonds to furnish the corresponding alkynylazoles in good yields. The reaction is tolerant toward various substitution patterns of substrates and allows the facile construction of azole‐core π‐conjugated systems.
最简单的耦合:铜-介导的直接氧化的1,3,4-恶二唑和恶唑与末端炔烃进行通过SP的切割交叉偶联2 ç H和SPÇ H键,得到以良好产率的相应alkynylazoles。该反应对底物的各种取代模式具有耐受性,并允许轻松构建吡咯核π共轭体系。