Steric and Chelate Directing Effects in Aromatic Borylation
作者:Jian-Yang Cho、Carl N. Iverson、Milton R. Smith
DOI:10.1021/ja0013069
日期:2000.12.1
Jian-Yang Cho, Carl N. Iverson, and Milton R. Smith, III*Department of Chemistry, Michigan State UniVersityEast Lansing, Michigan 48824ReceiVed April 14, 2000ReVised Manuscript ReceiVed October 18, 2000Hydrocarbon activation has attracted considerable attentionbecause hydrocarbon feedstocks are ubiquitous.
Jan-Yang Cho, Carl N. Iverson, and Milton R. Smith, III*Department of Chemistry, Michigan State University East Lansing, Michigan 48824ReceiVed April 14, 2000Receive Manuscript Received 2000 年 10 月 18 日 碳氢化合物活化已引起相当多的关注,因为碳氢化合物的原料无处不在。
Gold-Catalyzed Direct Oxidative Arylation with Boron Coupling Partners
An efficient synthesis of biaryls through a gold‐catalyzed oxidative cross‐coupling of arenes with strong electron‐deprived aryl boronates is presented herein. Regio‐ and chemocontrol are achieved by the selective activation of these coupling partners by gold at different oxidation states. Under reaction conditions devoid of basic additives or directinggroups, the role of acetato ligand as an internal
Copper‐Catalyzed Oxidative Cross‐Coupling of Electron‐Deficient Polyfluorophenylboronate Esters with Terminal Alkynes
作者:Zhiqiang Liu、Yudha P. Budiman、Ya‐Ming Tian、Alexandra Friedrich、Mingming Huang、Stephen A. Westcott、Udo Radius、Todd B. Marder
DOI:10.1002/chem.202002888
日期:2020.12.18
We report herein a mild procedure for the copper‐catalyzed oxidative cross‐coupling of electron‐deficient polyfluorophenylboronate esters with terminal alkynes. This method displays good functional group tolerance and broad substrate scope, generating cross‐coupled alkynyl(fluoro)arene products in moderate to excellent yields. Thus, it represents a simple alternative to the conventional Sonogashira