Rhodium-catalyzed Asymmetric Arylation of Nitroalkenes Powered by Simple Chiral Sulfur-Olefin Ligands
作者:Zheng Wang、Wen-Wen Chen、Ming-Hua Xu
DOI:10.1002/jccs.201700328
日期:2018.3
An efficient rhodium‐catalyzed enantioselective addition of potassium organotrifluoroborates to nitroalkenes powered by simple chiral sulfur‐olefin ligands is reported. This protocol is applicable to a broad range of 2‐aryl‐, alkyl‐, and heteroaryl‐substituted nitroalkenes, allowing access to diverse chiral β,β‐disubstituted nitroethanes in good to excellent yields with high enantioselectivity under
Deoxycholic Acid-Derived Biaryl Phosphites as Versatile and Enantioselective Ligands in the Rhodium-Catalyzed Conjugate Addition of Arylboronic Acids to Nitroalkenes
作者:Varsha R. Jumde、Anna Iuliano
DOI:10.1002/adsc.201300619
日期:2013.11.25
AbstractA highly enantioselective conjugate addition of arylboronic acids to cyclic as well as acyclic aromatic and aliphatic nitroalkenes is presented. The rhodium complexes obtained from deoxycholic acid‐derived binaphthyl and flexible biphenyl phosphites showed good activity as well as very high enantioselectivity (ee up to 99%) in the conjugated addition even in the presence of challenging substrates such as 1‐nitrocyclohexene or aliphatic acyclic nitroalkenes.magnified image