Homogeneous and Gas–Liquid Catellani‐Type Reaction Enabled by Continuous‐Flow Chemistry
作者:Alessandra Casnati、Hannes P. L. Gemoets、Elena Motti、Nicola Della Ca'、Timothy Noël
DOI:10.1002/chem.201803909
日期:2018.9.20
palladium‐catalyzed Catellani‐type reaction using a continuous‐flow platform is described. The implementation of continuous‐flow technology allowed the acceleration of the transformation and, for the first time, expansion of the chemical space to gaseous olefins (i.e., ethylene, propylene and 3,3,3‐trifluoropropene), thus providing a safe and practical approach to sterically hindered ortho‐disubstituted
In the presence of Pd(OAc) 2 and norbornene as catalysts, ortho-substituted aryl iodides and terminal olefins react to afford selectively substituted ortho-vinylbiphenyl derivatives in good yields. The reaction proceeds through a series of steps including norbornene insertion and C-H activation with formation of pallada-cycles able to promote arylation of their aromatic part. Norbornene deinsertion
Herein, we report the unprecedented use of a heterogeneous palladium catalyst for the step-economical Catellani reaction.
在此,我们报告了异质钯催化剂在步骤经济的Catellani反应中的史无前例的应用。
Palladium/Norbornene Cocatalyzed Catellani‐Type Domino Reaction with Aryl Diazonium Salts
作者:Ying Fu、Liang‐Liang Guo、Yu‐Xia Zhang、Zhengyin Du
DOI:10.1002/ejoc.202201175
日期:2022.11.25
In the presence of KI, aryl diazonium salts are suitable substrates for Catellani-type ortho arylation and amination reactions, allowing for the quick construction of multifunctionalized aromatic products.
在 KI 存在下,芳基重氮盐是 Catellani 型邻位芳基化和胺化反应的合适底物,可以快速构建多功能芳香族产品。
Aryl Diazonium Salts: Powerful Arylating Agents for Catellani-Type <i>ortho</i>-Arylation