A Scalable Synthesis of Chiral Himbert Diene Ligands for Asymmetric Catalysis
作者:Raja K. Rit、Hongyi Li、Stephen P. Argent、Katherine M. Wheelhouse、Simon Woodward、Hon Wai Lam
DOI:10.1002/adsc.202300039
日期:——
Chiral dienes are important ligands in asymmetriccatalysis but they are less accessible than other commonly used ligands such as chiral bisphosphines. Here, we show that intramolecular [4+2] cycloaddition of a simply attained chiral allenecarboxanilide readily affords pseudoenantiomeric bicyclo[2.2.2]octa-2,5-dienes containing an alkenyl bromide, which can be readily functionalized to give diverse