Practical Synthesis of (<i>Z</i>)-α,β-Unsaturated Nitriles via a One-Pot Sequential Hydroformylation/Knoevenagel Reaction
作者:Yanxin Jiang、Chao Li、Songbai Tang、Shaokun Tao、Maolin Yuan、Ruixiang Li、Hua Chen、Haiyan Fu、Xueli Zheng
DOI:10.1021/acs.joc.1c01953
日期:2021.11.5
Herein, the synthesis of (Z)-α,β-unsaturated nitriles by a sequential hydroformylation/Knoevenagel reaction has been first developed. A variety of crude α-olefins from Fischer–Tropsch synthesis, internal and special olefins, as well as alkynes could be transformed into value-added alkenyl nitriles (39 examples) up to 90% yield. Remarkably, compared with commonly used tedious multistep reactions, the
在此,首次开发了通过顺序加氢甲酰化/Knoevenagel 反应合成 ( Z )-α,β-不饱和腈。来自费-托合成的各种粗α-烯烃、内烯烃和特殊烯烃以及炔烃可以转化为增值的烯基腈(39 个例子),产率高达 90%。值得注意的是,与常用的繁琐的多步反应相比,一锅法的特点是原料便宜且容易获得,具有优异的化学选择性、区域选择性和立体选择性,反应条件非常温和,易于放大生产。