Retention or Inversion in Stereospecific Nickel-Catalyzed Cross-Coupling of Benzylic Carbamates with Arylboronic Esters: Control of Absolute Stereochemistry with an Achiral Catalyst
作者:Michael R. Harris、Luke E. Hanna、Margaret A. Greene、Curtis E. Moore、Elizabeth R. Jarvo
DOI:10.1021/ja311783k
日期:2013.3.6
pivalates with aryl- and heteroarylboronic esters has been developed. The reaction proceeds with selective inversion or retention at the electrophilic carbon, depending on the nature of the ligand. Tricyclohexylphosphine ligand provides the product with retention, while an N-heterocyclic carbene ligand provides the product with inversion.
已经开发了苄基氨基甲酸酯和新戊酸酯与芳基和杂芳基硼酸酯的立体有择偶联。根据配体的性质,反应以选择性反转或保留在亲电碳上进行。三环己基膦配体为产物提供保留,而 N-杂环卡宾配体为产物提供反转。