Preparation and Diels?Alder/Cross Coupling Reactions of New 2?Boron-Substituted 1,3-Dienes

摘要

Several new 2-boron substituted dienes havenbeen prepared and characterized. Their reactivity in Diels−nAlder reactions has been examined and the boron substitutedncycloadducts of those cycloaddition reactions have been usednin cross coupling reactions. One-pot tandem Diels−Aldercross coupling reactions of 2-boron substituted dienes are then also reported along with some experimental evidence that thesenone-pot reactions are proceeding through a Pd(II)-catalyzed Diels−Alder/cross coupling reaction pathway.