Copper-Catalyzed Enantioselective Addition of Styrene-Derived Nucleophiles to Imines Enabled by Ligand-Controlled Chemoselective Hydrocupration
作者:Yang Yang、Ian B. Perry、Stephen L. Buchwald
DOI:10.1021/jacs.6b06299
日期:2016.8.10
The copper-catalyzed intermolecular enantioselectiveaddition of styrenes to imines has been achieved under mild conditions at ambient temperature. This process features the use of styrenes as latent carbanion equivalents via the intermediacy of catalytically generated benzylcopper derivatives, providing an effective means for accessing highly enantiomerically enriched amines bearing contiguous stereocenters
Sulfinyl-Mediated Stereoselective Overman Rearrangements and Diels–Alder Cycloadditions
作者:Roberto Fernández de la Pradilla、Ignacio Colomer、Alma Viso
DOI:10.1021/ol301139a
日期:2012.6.15
The Overman rearrangement of allylic sulfinyl trichloroacetimidates affords sulfinyl trichloroacetamides with high stereoselectivity and excellent yields. Bis-allylic substrates lead to amido 2-sulfinyl butadiene derivatives in excellent yields, with total chemo- and diastereoselectivity. The Diels-Alder cycloaddition of related dienes is controlled by the sulfoxide moiety.