Stereoselective Access to Alkylidenecyclobutanes through γ-Selective Cross-Coupling Strategies
作者:Michael Eisold、Dorian Didier
DOI:10.1021/acs.orglett.7b01803
日期:2017.8.4
Alkylidenecyclobutanes (ACBs) containing all-carbon quaternary stereocenters were simply and efficiently synthesized by combining boron-homologation and γ-selective cross-coupling strategies. This unique sequence led to excellent regio- and diastereoselectivities in the generation of targeted four-membered rings with up to 99% enantiomeric excess using chiral substrates. In addition to the original