A novel protocol for nickel-catalyzed direct sp2 CâH bond alkylation of N-aromatic heterocycles has been developed. This new reaction proceeded efficiently at room temperature using a Grignard reagent as the coupling partner. This approach provides new access to a variety of alkylated N-aromatic heterocycles which are potentially of great importance in medicinal chemistry.
Catalytic Oxidative Coupling of Primary Amines under Air: A Flexible Route to Benzimidazole Derivatives
作者:Khac Minh Huy Nguyen、Martine Largeron
DOI:10.1002/ejoc.201501520
日期:2016.2
inspired by copper amineoxidases, we disclose herein the scope and factors influencing the success of the cooperative action of CuBr2 as electron-transfer mediator and a topaquinone-like substrate-selective catalyst in the oxidative cyclocondensation of primary amines with o-aminoanilines. This one-pot atom-economic multistep process, which works under green conditions with ambient air as the terminal