Copper-Catalyzed Asymmetric Conjugate Addition of Alkenyl- and Alkylalanes to α,β-Unsaturated Lactams
作者:Pierre Cottet、Daniel Müller、Alexandre Alexakis
DOI:10.1021/ol303505k
日期:2013.2.15
lactams via a copper-catalyzed asymmetric 1,4-addition of the corresponding alanes. Moderate to good yields and good to excellent enantioselectivities are achieved by using a combination of the very cheap copper(II) naphthenate and a readily available phosphine amine ligand. The creation of an all-carbon quaternarystereogeniccenter, via Michael addition to a trisubstitutedconjugated lactam, is also