Synthesis of Unsymmetrical 2,6-Diarylanilines by Palladium-Catalyzed C–H Bond Functionalization Methodology
作者:Se Hun Kwak、Nurbey Gulia、Olafs Daugulis
DOI:10.1021/acs.joc.8b00659
日期:2018.5.18
3,5-Dimethylpyrazole was employed as a monodentate directing group for palladium-catalyzed ortho-sp2 C–H arylation with aryl iodides. The reaction shows good functional group tolerance and outstanding selectivity for mono-ortho-arylation. Ozonolysis of ortho-arylated arylpyrazoles gave acylated biphenylamines that were further arylated to afford unsymmetrically substituted 2,6-diarylacetanilides.
3,5-二甲基吡唑用作钯与芳基碘化物催化邻-sp 2 C-H芳基化的单齿导向基团。该反应显示出良好的官能团耐受性和出色的单邻位芳基化选择性。的臭氧分解邻-arylated芳基吡唑,得到酰化biphenylamines其进一步芳基化,得到不对称取代的2,6- diarylacetanilides。