Copper(II)-Mediated <i>ortho</i>-Selective C(sp<sup>2</sup>)–H Tandem Alkynylation/Annulation and <i>ortho</i>-Hydroxylation of Anilides with 2-Aminophenyl-1<i>H</i>-pyrazole as a Directing Group
作者:Wan-Chen Cindy Lee、Wei Wang、Jie Jack Li
DOI:10.1021/acs.joc.7b02893
日期:2018.2.16
been identified as a viable directing group to promote copper(II)-mediated ortho-selective sp2 C–H bond tandem alkynylation/annulation of anilides with terminal alkynes to offer arylmethylene isoindolinones. Meanwhile, copper(II)-mediated ortho-selective sp2 C–H hydroxylation of anilides has also been optimized as the major reaction pathway by using Cu(OAc)2 as the promoter and 1,1,3,3-tetramethylguanidine
2-氨基苯基-1 H-吡唑已被确认为促进铜(II)介导的邻位选择性sp 2 C–H键与末端炔烃串联联苯胺的烷基化/环化反应以提供芳基亚甲基异吲哚啉酮的可行导向基团。同时,通过使用Cu(OAc)2作为促进剂和1,1,3,3-四甲基胍作为表面活性剂,铜(II)介导的苯甲酸酯的邻位选择性sp 2 C–H羟基化反应也已被优化为主要反应途径。有机碱。通过肼解芳基亚甲基异吲哚满酮和碱解羟基化产物可实现对导向基团的回收。