Transannular [4 + 2] Cycloaddition Reactions of Cobalt-Complexed Macrocyclic Dienynes
作者:Sedef Karabiyikoglu、Craig A. Merlic
DOI:10.1021/acs.orglett.5b01984
日期:2015.8.21
The first transannular [4 + 2] cycloaddition reactions of macrocyclic dicobalt hexacarbonyl–dienyne complexes were demonstrated. Complexes were conveniently prepared through palladium(II)-catalyzed intramolecular oxidative cyclization of bis(vinylboronate esters) followed by complexation with dicobalt octacarbonyl. Transannular [4 + 2] cycloaddition reactions of the complexes occurred at lower temperatures