Palladium-catalyzed cross-coupling reaction of allyl acetates with pinacol aryl- and vinylboronates
作者:Giorgio Ortar
DOI:10.1016/s0040-4039(03)00980-8
日期:2003.6
Pinacol boronates 2 couple efficiently with allyl acetates 1 in the presence of a palladium catalyst prepared in situ from PdCl2 and TFP to give the coupled products 3 in moderate to good yields under mild conditions.
Allylic alcohols can be used directly for the palladium(0)-catalyzed allylation of aryl- and alkenylboronic acids with a wide variety of functional groups. A triphenylphosphine-ligated palladium catalyst turns out to be most effective for the cross-coupling reaction and its low loading (less than 1 mol%) leads to formation of the coupling product in high yield. The Lewis acidity of the organoboron