Divergent C–H Functionalizations Directed by Sulfonamide Pharmacophores: Late-Stage Diversification as a Tool for Drug Discovery
作者:Hui-Xiong Dai、Antonia F. Stepan、Mark S. Plummer、Yang-Hui Zhang、Jin-Quan Yu
DOI:10.1021/ja201708f
日期:2011.5.11
pharmacophores found in nearly 200 drugs currently on the market, including the non-steroidalanti-inflammatory blockbuster drug celecoxib. We developed a set of six categorically different sulfonamide C-H functionalization reactions (olefination, arylation, alkylation, halogenation, carboxylation, and carbonylation), each representing a distinct handle for further diversification to reach a large number of
<i>meta</i>-C−H Arylation and Alkylation of Benzylsulfonamide Enabled by a Palladium(II)/Isoquinoline Catalyst
作者:Guolin Cheng、Peng Wang、Jin-Quan Yu
DOI:10.1002/anie.201704411
日期:2017.7.3
Palladium(II)‐catalyzed meta‐C−Harylation and alkylation of benzylsulfonamide using 2‐carbomethoxynorbornene (NBE‐CO2Me) as a transient mediator are realized by using a newly developed electron‐deficient directing group and isoquinoline as a ligand. This protocol features broad substrate scope and excellent functional‐group tolerance. The meta‐substituted benyzlsulfonamides can be readily transformed