A facile synthetic route for 2-pyridyl derivatives: direct preparation of a stable 2-pyridylzinc bromide and its copper-free and pd-catalyzed coupling reactions
作者:Seung-Hoi Kim、Reuben D. Rieke
DOI:10.1016/j.tetlet.2009.07.004
日期:2009.9
Direct preparation of 2-pyridylzinc bromide has been developed. Interestingly, the subsequent coupling reactions with acid chlorides have been carried out without any transition metal catalyst. 2-Pyridylaryl compounds, symmetrical and unsymmetrical 2,2′-bipyridines were also successfully obtained from palladium-catalyzed coupling reactions of 2-pyridylzinc bromide under mild conditions.
已经开发了直接制备2-吡啶基溴化锌的方法。有趣的是,随后与酰氯的偶联反应已经在没有任何过渡金属催化剂的情况下进行了。还可以从钯催化的2-吡啶基溴化锌在温和条件下的偶联反应中成功获得2-吡啶基芳基化合物,对称和不对称的2,2'-联吡啶。