<i>tert</i>-Butyl nitrite-mediated radical cyclization of tetrazole amines and alkynes toward tetrazolo[1,5-<i>a</i>]quinolines
作者:Teng Liu、Yi-Gang Ji、Lei Wu
DOI:10.1039/c9ob00169g
日期:——
A general and efficient radical cyclization of 1H-tetrazol-5-amines and alkynes toward tetrazolo[1,5-a]quinolines is established for the first time. The annulation mediated by tert-butyl nitrite takes place expeditiously within 10 minutes under mild conditions. Without using external additives or excitation, the tetrazolo[1,5-a]quinoline derivatives are obtained in moderate to good yields, along with
首次建立了1 H-四唑-5-胺和炔烃向四唑并[1,5- a ]喹啉的一般有效的自由基环化反应。在温和条件下,亚硝酸叔丁酯介导的环化迅速在10分钟内发生。在不使用外部添加剂或激发的情况下,以中等至良好的产率获得了四唑并[1,5- a ]喹啉衍生物,以及对不对称炔烃的高区域选择性和宽泛的功能耐受性特征。示例性地,该反应经由自由基过程发生,其中由亚硝酸叔丁酯,水和四唑盐-重氮盐协同生成芳基。