Chiral Boron Complex-Promoted Asymmetric Diels–Alder Cycloaddition and Its Application in Natural Product Synthesis
作者:Xia Li、Jianguang Han、Alexander X. Jones、Xiaoguang Lei
DOI:10.1021/acs.joc.5b02248
日期:2016.1.15
An efficient method for the asymmetric Diels–Alder cycloaddition of 2′-hydroxychalcones with acyclic or cyclic dienes has been successfully developed. The Diels–Alder cycloaddition is mediated by a chiral boron complex with VANOL, affording the corresponding products in high yields and with excellent diastereo- and enantioselectivities. This reaction enabled the enantioselective construction of cyclohexene