Nickel-Catalyzed Cross-Coupling of Umpolung Carbonyls and Alkyl Halides
作者:Dianhu Zhu、Leiyang Lv、Zihang Qiu、Chao-Jun Li
DOI:10.1021/acs.joc.9b00649
日期:2019.5.17
nickel-catalyzed cross-coupling of Umpolung carbonyls and alkylhalides was developed. Complementary to classical alkylation techniques, this reaction utilizes Umpolung carbonyls as the environmentally benign alkyl nucleophiles, providing an efficient and selective catalytic alternative to the traditional use of highly reactive alkylorganometallic reagents.
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 catalyticactivity and lower toxicity. Herein, we describe a novel cobalt-catalyzed alkyl–alkyl cross-coupling reaction of hydrazone with alkylhalides under mild reaction conditions, where the use of a PNP-type pincerligand is essential for catalysis