A Robust and Broadly Applicable Cobalt-Catalyzed Cross-Coupling of Functionalized Bench-Stable Organozinc Pivalates with Unsaturated Halides
作者:Jeffrey M. Hammann、Ferdinand H. Lutter、Diana Haas、Paul Knochel
DOI:10.1002/anie.201610324
日期:2017.1.19
We report a robust and broadly applicable CoCl2‐catalyzed cross‐coupling between functionalized aryl and heteroaryl zinc pivalates and various electron‐poor aryl and heteroaryl halides (X=Cl, Br, I). Couplings with (E)‐ or (Z)‐bromo‐ or iodo‐alkenes proceed with retention of configuration. Also, alkynyl bromides react with arylzinc pivalates providing arylated alkynes.
我们报道了功能化的芳基和杂芳基新戊酸锌与各种电子贫乏的芳基和杂芳基卤化物(X = Cl,Br,I)之间稳健且广泛适用的CoCl 2催化的交叉偶联。与(E)-或(Z)-溴代或碘代烯烃的偶联会保留构型。同样,炔基溴化物与新戊酸芳基锌反应生成芳基化炔烃。