Direct Ortho-Acetoxylation of Anilides via Palladium-Catalyzed sp<sup>2</sup> C−H Bond Oxidative Activation
作者:Guan-Wu Wang、Ting-Ting Yuan、Xue-Liang Wu
DOI:10.1021/jo8003088
日期:2008.6.1
Various anilides have been directly ortho-acetoxylated through a Pd(OAc)2-catalyzed C−Hbond activation process. The amide group in anilides was found to functionalize as an elegant directing group to convert aromatic sp2 C−H bonds into C−O bonds in high regioselectivity with acetic acid as the acetate source and K2S2O8 as the oxidant.
通过Pd(OAc)2催化的CH键活化过程,各种苯甲酸酯已直接被邻乙酰氧基化。发现在苯甲酸酯中的酰胺基团作为优雅的引导基团起作用,以乙酸为乙酸盐源和K 2 S 2 O 8为氧化剂以高区域选择性将芳族sp 2 C-H键转变为C-O键。
US6530960B1
申请人:——
公开号:US6530960B1
公开(公告)日:2003-03-11
US6752839B1
申请人:——
公开号:US6752839B1
公开(公告)日:2004-06-22
Palladium-catalyzed C–H activation of anilides at room temperature: ortho-arylation and acetoxylation
作者:Fan Yang、Feijie Song、Wei Li、Jingbo Lan、Jingsong You
DOI:10.1039/c3ra41981a
日期:——
Room-temperature ortho-arylation and acetoxylation of anilides have been achieved using cationic palladium (Pd[TFA]+) as catalyst and (NH4)2S2O8 as oxidant. Preliminary investigation of the mechanism suggests that palladium may have different oxidation states in the catalytic cycles of these two transformations.