Palladium-Catalyzed α-Allylation of Secondary Nitroalkanes with Allylic Alcohols and Strategic Exploitation of Seebach’s Reagent for the Total Synthesis of (±)-Adalinine
作者:Chieh-Yu Chang、Yen-Ku Wu
DOI:10.1021/acs.joc.8b00710
日期:2018.6.1
method is reported for the catalytic direct coupling of allylic alcohols and nitroalkanes. In the allylation process, the synergistic action of palladium complexes and titanium(IV) alkoxide facilitates the formation of nitronate and π-allylpalladium intermediate. In the cases of reluctant allylations, typically with sterically demanding nitroalkanes, we found the addition of substoichiometric amount
报道了一种方法用于烯丙基醇和硝基烷烃的催化直接偶联。在烯丙基化过程中,钯配合物和钛(IV)醇盐的协同作用促进了硝酸盐和π-烯丙基铝中间体的形成。在勉强的烯丙基化的情况下,通常是空间上需要的硝基烷,我们发现亚化学计量的DBU的加入极大地促进了所需的转化。我们还通过衍生自Seebach试剂的均烯丙基硝基烷烃完成了(±)-精氨酸的全合成。