Mechanism-based enhancement of scope and enantioselectivity for reactions involving a copper-substituted stereogenic carbon centre
作者:Jaehee Lee、Suttipol Radomkit、Sebastian Torker、Juan del Pozo、Amir H. Hoveyda
DOI:10.1038/nchem.2861
日期:2018.1
electrophile concentration can lead to elevated enantioselectivity. This is because diastereoselective Cu–H elimination may be avoided and/or achiral Cu–boryl intermediates can be converted to allyl–B(pin) rather than add to an alkene. We illustrate that lower alkene amounts and/or higher chiralligand concentration can minimize the deleterious influence of achiral Cu–alkyl species, resulting in improved enantiomeric