difficult ene–yne metatheses employed a Grubbs catalyst bearing a cyclic amino alkyl carbene ligand. A variety of terminal alkynes of varying substitution underwent the reaction, and different phosphorus-containing alkenes were found to give the conjugated diene products in high yields. The resulting dienes were further transformed by Horner-type Wittig reactions and a Diels–Alder cycloaddition.
                                    使用不饱和
膦酸酯和
磷酸盐试剂进行了多种烯-炔交叉复分解反应,从而以良好或优异的收率提供了相应的
磷酸化1,3-二烯产物。这些困难的烯-炔复分解反应使用了带有环状
氨基烷基卡宾
配体的Grubbs催化剂。反应进行了各种取代度不同的末端
炔烃的研究,发现不同的含
磷烯烃可以高收率得到共轭二烯产物。生成的二烯通过霍纳型维蒂希反应和Diels-Alder环加成反应进一步转化。