Dialkyl Ether Formation by Nickel‐Catalyzed Cross‐Coupling of Acetals and Aryl Iodides
作者:Kevin M. Arendt、Abigail G. Doyle
DOI:10.1002/anie.201503936
日期:2015.8.17
A new substrate class for nickel‐catalyzed C(sp3) cross‐coupling reactions is reported. α‐Oxy radicals generated from benzylic acetals, TMSCl, and a mild reductant can participate in chemoselective cross‐coupling with aryl iodides using a 2,6‐bis(N‐pyrazolyl)pyridine (bpp)/Ni catalyst. The mild, base‐free conditions are tolerant of a variety of functional groups on both partners, thus representing
据报道,镍催化的C(sp 3)交叉偶联反应具有新的底物类别。由苄基乙缩醛,TMCSC1和温和的还原剂生成的α-氧自由基可以使用2,6-二(N-吡唑基)吡啶(bpp)/ Ni催化剂与芳基碘化物进行化学选择性交叉偶联。温和的无碱条件可耐受两个配偶体上的各种官能团,因此代表了二烷基醚合成的有吸引力的CC键形成方法。还描述了与拟议的催化循环有关的[(bpp)NiCl]络合物的表征。