A phosphine-based catalyst composition suitable for the telomerization of butadiene to produce 1-octene includes palladium and one of a class of novel phosphine ligands characterized by two potentially functionalized phenyl rings and a third phenyl group having an alkoxy functionality on one of the ortho-positions, which is part of a 5- or 6-membered ring between this ortho position and the adjacent meta position, this ring not being part of a second aryl group. The catalysts including this class of phosphine ligands may exhibit higher catalytic activity and selectivity, and may be used at lower temperatures, than many other phosphine ligand catalysts, reducing costs. Palladium precipitation may also be reduced.
一种适用于
丁二烯的端聚反应生成 1-
辛烯的膦基催化剂组合物包括
钯和一类新型
膦配体,其特征是具有两个潜在官能化的苯基环和一个在正位上具有烷氧基官能团的第三个苯基基团,该苯基基团是该正位和相邻元位之间的 5 或 6 元环的一部分,该环不是第二个芳基基团的一部分。与许多其他
膦配体催化剂相比,包括这类
膦配体在内的催化剂可以表现出更高的催化活性和选择性,并且可以在更低的温度下使用,从而降低成本。
钯沉淀也可减少。