arylation and alkenylation of the alpha-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
[反应:见正文]用有机
硼烷和-
硼酸盐研究了过渡
金属催化的α-
溴代烯基
膦酸酯的芳基化和烯基化。用芳基
硼酸和
钯催化剂成功进行了芳基化反应,而发现烯基
硼酸酯和
镍催化剂进行了烯基化反应。另外,通过烯基化制备的二烯的分子内Diels-Alder反应得到相应的加合物。