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

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