Enantioselective Addition of Silicon Nucleophiles to Aldimines Using a Preformed NHC-Copper(I) Complex as the Catalyst
作者:Alexander Hensel、Kazuhiko Nagura、Lukas B. Delvos、Martin Oestreich
DOI:10.1002/anie.201402086
日期:2014.5.5
asymmetric addition of siliconnucleophiles to typical prochiral acceptors, the enantioselective 1,2‐addition to aldimines, is addressed. Activation of the SiB bond in the silicon pronucleophile by a copper(I) alkoxide with McQuade’s chiral six‐membered N‐heterocyclic carbene as a supporting ligand releases the siliconnucleophile, which adds to various aldimines with high levels of enantioselectivity. The