Cobalt-catalyzed cross-coupling of Umpolung carbonyls with alkyl halides under mild conditions
作者:Ruofei Cheng、Graham de Ruiter、Chao-Jun Li
DOI:10.1039/d2cc04302e
日期:——
dominated by palladium and nickel catalysts, cobalt-based catalysts have shown unique advantages for such cross-coupling reactions in terms of higher catalytic activity and lower toxicity. Herein, we describe a novel cobalt-catalyzed alkyl–alkyl cross-coupling reaction of hydrazone with alkyl halides under mild reaction conditions, where the use of a PNP-type pincer ligand is essential for catalysis
虽然经典的交叉偶联以钯和镍催化剂为主,但钴基催化剂在这种交叉偶联反应中表现出独特的优势,即更高的催化活性和更低的毒性。在此,我们描述了一种新型钴催化的腙与卤代烷在温和反应条件下的烷基-烷基交叉偶联反应,其中使用 PNP 型钳形配体对催化至关重要。醛和酮腙都与该反应相容,以中等至良好的产率产生一系列 C(sp 3 )–C(sp 3 ) 偶联产物。