Axial Chirality Control During Suzuki−Miyaura Cross-Coupling Reactions: The <i>tert</i>-Butylsulfinyl Group as an Efficient Chiral Auxiliary
作者:Françoise Colobert、Victoria Valdivia、Sabine Choppin、Frédéric R. Leroux、Inmaculada Fernández、Eleuterio Álvarez、Noureddine Khiar
DOI:10.1021/ol9020755
日期:2009.11.19
An efficient route to a new family of axially chiral biaryl ligands by a Suzuki−Miyaura cross-coupling reaction between ortho,ortho′-disubstituted aryl iodides bearing in ortho position a tert-butyl or p-tolylsulfinyl group and ortho-substituted phenyl boronic acids or esters is described. The comparison between the t-BuSO and p-TolSO groups as chiral controllers is reported. The modularity of the