Enantioselective palladium catalyzed conjugate additions of ortho-substituted arylboronic acids to β,β-disubstituted cyclic enones: total synthesis of herbertenediol, enokipodin A and enokipodin B
Enantioselective palladium catalyzed conjugate additions of ortho-substituted arylboronic acids to β,β-disubstituted cyclic enones: total synthesis of herbertenediol, enokipodin A and enokipodin B
Palladium-Catalyzed, <i>tert-</i>
Butyllithium-Mediated Dimerization of Aryl Halides and Its Application in the Atropselective Total Synthesis of Mastigophorene A
作者:Jeffrey Buter、Dorus Heijnen、Carlos Vila、Valentín Hornillos、Edwin Otten、Massimo Giannerini、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1002/anie.201510328
日期:2016.3.7
A palladium‐catalyzed direct synthesis of symmetricbiaryl compounds from aryl halides in the presence of tBuLi is described. In situ lithium–halogen exchange generates the corresponding aryl lithium reagent, which undergoes a homocouplingreaction with a second molecule of the aryl halide in the presence of the palladium catalyst (1 mol %). The reaction takes place at room temperature, is fast (1 h)