Nickel-Catalyzed Reductive Cross-Coupling of Aryl Bromides with Alkyl Bromides: Et<sub>3</sub>N as the Terminal Reductant
作者:Zhengli Duan、Wu Li、Aiwen Lei
DOI:10.1021/acs.orglett.6b01837
日期:2016.8.19
cross-coupling paradigm using Et3N as the terminal reductant is reported. By using this photoredox catalysis and nickel catalysis approach, a direct Csp2–Csp3 reductive cross-coupling of aryl bromides with alkyl bromides is achieved under mild conditions without stoichiometric metal reductants.
还原性交叉偶联已经成为构建碳-碳键的直接方法。迄今为止,大多数钴,镍和钯催化的还原性交叉偶联反应仅限于化学计量的Mn(0)或Zn(0)作为还原剂。报道了一种使用Et 3 N作为末端还原剂的镍催化交叉偶联范例。通过使用这种光氧化还原催化和镍催化方法,在温和条件下无需化学计量的金属还原剂即可实现芳基溴化物与烷基溴化物的直接Csp 2 -Csp 3还原交叉偶联。