Silver-Catalyzed Cross-Olefination of Donor and Acceptor Diazo Compounds: Use of<i>N</i>-Nosylhydrazones as Diazo Surrogate
作者:Zhaohong Liu、Binbin Liu、Xue-Feng Zhao、Yan-Bo Wu、Xihe Bi
DOI:10.1002/ejoc.201601610
日期:2017.1.26
The cross-olefination reaction of donor and acceptor diazo compounds is reported. The use of N-nosylhydrazones as the diazo surrogates and the dependence on silver catalysis are crucial for the reaction development. A variety of (hetero)aryl N-nosylhydrazones and α-diazo esters, amides, and phosphonates were compatible, affording functionalized alkenes in good-to-high yields with moderate Z/E selectivity
报道了供体和受体重氮化合物的交叉烯烃化反应。使用 N-nosylhydrazones 作为重氮替代物和对银催化的依赖对于反应发展至关重要。各种(杂)芳基 N-nosylhydrazones 和 α-重氮酯、酰胺和膦酸酯是相容的,以良好到高的产率提供功能化烯烃,Z/E 选择性适中。实验和 DFT 计算结果表明交叉选择性是由于银催化剂对供体重氮化合物的选择性活化。