作者:Jian Lei、Huaxin Gao、Miaoling Huang、Xiao Liu、Yangfan Mao、Xiaolan Xie
DOI:10.1039/c9cc07998j
日期:——
An unprecedented Cu-catalyzed stereoselective alkylhydrazination reaction involving terminal alkynes, azocarboxylic esters as a nitrogen source, and dimethyl 2,2'-azobis(2-methylpropionate) and its analogues as a carbon source is presented here. This protocol provides direct access to tri-substituted (E)-alkenyl-hydrazines with good regio- and stereoselectivity under mild conditions. The transformation
本文介绍了空前的Cu催化的立体选择性烷基肼化反应,涉及末端炔烃,偶氮羧酸酯作为氮源,以及2,2'-偶氮二甲基二(2-甲基丙酸酯)二甲基及其类似物作为碳源。该协议可在温和条件下直接访问具有良好区域和立体选择性的三取代(E)-烯基-肼。无需外部氧化剂或添加剂即可进行转化,并显示出良好的官能团耐受性。烯基肼产物可以容易地转化成有价值的1,4-二羰基和烯丙基羧酸衍生物。