Quaternary Carbon Stereogenic Centers through Copper-Catalyzed Enantioselective Allylic Substitutions with Readily Accessible Aryl- or Heteroaryllithium Reagents and Aluminum Chlorides
作者:Fang Gao、Yunmi Lee、Kyoko Mandai、Amir H. Hoveyda
DOI:10.1002/anie.201005124
日期:2010.11.2
of the notorious aryls is solved: The first efficient catalytic and enantioselective method for allylicsubstitutions that furnish quaternary carbon stereogenic centers by additions of aryl‐ or heteroarylmetals is reported (see scheme). Highly site‐ and enantioselective processes begin with readily available organolithium reagents.
Enantioselective Synthesis of Di- and Tri-Arylated All-Carbon Quaternary Stereocenters via Copper-Catalyzed Allylic Arylations with Organolithium Compounds
作者:Sureshbabu Guduguntla、Jean-Baptiste Gualtierotti、Shermin S. Goh、Ben L. Feringa
DOI:10.1021/acscatal.6b01681
日期:2016.10.7
catalyzed synthesis of di- and triarylated all-carbon quaternary stereocenters via asymmetric allylic arylation (AAAr) with aryl organolithium compounds is demonstrated. The use of readily available or easily accessible aryl organolithium reagents in combination with trisubstituted allyl bromides, in the presence of a copper/NHC catalyst, affords important di- and triarylated all-carbon quaternary stereocenters