Borylation of Aryl and Alkenyl Carbamates through Ni-Catalyzed CO Activation
作者:Kun Huang、Da-Gang Yu、Shu-Fang Zheng、Zhen-Hua Wu、Zhang-Jie Shi
DOI:10.1002/chem.201001943
日期:2011.1.17
Direct borylation of aryl/alkenylcarbamates was developed through Ni catalysis. A broad substrate scope, including aryl, alkenyl, and heterocyclic derivatives, was studied. This study offers a convenient method to approach aryl/alkenyl boronic esters from phenol and ketone derivatives (see scheme).
Synthesis of α‐Quaternary β‐Lactams via Copper‐Catalyzed Enantioconvergent Radical C(sp
<sup>3</sup>
)−C(sp
<sup>2</sup>
) Cross‐Coupling with Organoboronate Esters
作者:Fu‐Li Wang、Lin Liu、Chang‐Jiang Yang、Cheng Luan、Jing Yang、Ji‐Jun Chen、Qiang‐Shuai Gu、Zhong‐Liang Li、Xin‐Yuan Liu
DOI:10.1002/anie.202214709
日期:2023.1.9
Copper-catalyzed enantioconvergent radical C(sp3)−C(sp2) cross-coupling of tertiary alkyl bromides with organoboronate esters is developed to access synthetically valuable α-quaternary chiral β-lactams. The success of this work relies on the utilization of chiral N,N,N-ligands to forge the sterically congested C(sp3)−C(sp2) bonds.