Efficient Cross-Coupling of Secondary Alkyltrifluoroborates with Aryl Chlorides—Reaction Discovery Using Parallel Microscale Experimentation
作者:Spencer D. Dreher、Peter G. Dormer、Deidre L. Sandrock、Gary A. Molander
DOI:10.1021/ja8031423
日期:2008.7.1
Microscale parallel experimentation was used to discover three catalyst systems capable of coupling secondary organotrifluoroborates with sterically and electronically demanding aryl chlorides and bromides. The ensuing results represent the first comprehensive study of alkylboron coupling to aryl chlorides and, in particular, using secondary alkylboron partners. A ligand-dependent beta-hydride elimination/reinsertion mechanism was implicated in the cross-coupling of more hindered substrates, leading to isomeric mixtures of coupled products in some cases.
Anti-Fibrotic Pyridinones
申请人:INTERMUNE, INC.
公开号:US20180064692A1
公开(公告)日:2018-03-08
Disclosed are pyridinone compounds, method for preparing these compounds, and methods for treating fibrotic disorders.