Palladium-catalyzed cross-coupling reactions of organogold(i) phosphanes with allylic electrophiles
作者:Miguel Peña-López、Miguel Ayán-Varela、Luis A. Sarandeses、José Pérez Sestelo
DOI:10.1039/c2ob06788a
日期:——
as cinnamyl and geranyl halides (bromide, chloride and acetates) under palladium catalysis in THF at 80 °C to afford the α-substitution product with moderate to high yields. When the reaction is performed with a chiral enantiopure secondary acetate, the α-substituted cross-coupling product is obtained with complete inversion of the stereochemistry.
Iron-Catalyzed 1,4-Addition of α-Olefins to Dienes
作者:Benoît Moreau、Jessica Y. Wu、Tobias Ritter
DOI:10.1021/ol802524r
日期:2009.1.15
A new intermolecular, stereo- and regioselective iron-catalyzed 1,4-addition of α-olefins to 1,3-dienes using as low as 1 mol % of an iminopyridine−ferrous chloride complex was developed. Importantly, both double bonds of the linear 1,4-diene addition products are obtained with absolute stereocontrol.