Coupling Reactions of α-Bromoalkenyl Phosphonates with Aryl Boronic Acids and Alkenyl Borates
2002-11-01T00:00:00Z (GMT) by
Transition metal-catalyzed arylation and alkenylation of the α-bromoalkenyl phosphonates were investigated with organoboranes and -borates. Arylation was successful with the aryl boronic acids and a palladium catalyst, while alkenylation was found to proceed with alkenyl borates and a nickel catalyst. In addition, an intramolecular Diels−Alder reaction of the diene prepared by the alkenylation afforded the corresponding adduct.
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