中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
联苯-2,3’-二羧酸 | biphenyl-2,3'-dicarboxylic acid | 606-75-7 | C14H10O4 | 242.231 |
In the presence of Pd(OAc)2 and norbornene as catalysts, two molecules of an ortho-substituted aryl iodide undergo arylaryl coupling to a palladium-bonded biphenylyl intermediate, which is hydrogenolyzed by benzyl alcohol to give 2,3′-disubstituted biaryl derivatives in satisfactory yields. A curious behaviour was observed with o-chloroiodobenzene, which gave activation of the CCl bond with four-membered ring formation.Key words: biphenyls, arylaryl coupling, multistep reactions, palladium, palladacycles, C-H activation, catalysis.
Aromatic amines are ubiquitous moieties in organic molecules and their direct functionalization is of great interest in many research areas due to their prevalence in pharmaceuticals and organic electronics. While several synthetic tools exist for the