Structure-Activity Relationship of Palladium Phosphanesulfonates: Toward Highly Active Palladium-Based Polymerization Catalysts
作者:Laurence Piche、Jean-Christophe Daigle、Gregor Rehse、Jerome P. Claverie
DOI:10.1002/chem.201103694
日期:2012.3.12
lead to the most activecatalysts. Thus, the catalyst based on phosphane bis‐tert‐butyl‐phosphanyl‐benzenesulfonic acid (R=tBu) exhibits unprecedented high activity, rapidly polymerizing ethylene at room temperature to yield a linear polymer of high molecular weight (Mw=116 000 g mol−1). The influence of the R group on the catalyst ability to incorporate methyl acrylate is also investigated.
钯phosphanesulfonate [R 2 P(C 6 H ^ 4 - ö -SO 3)PdMeL]催化剂允许一个特殊的大量官能烯烃与乙烯的共聚。然而,这些催化剂通常具有降低的活性。我们在这里对膦取代基R对活性和分子量的影响进行了系统的研究。具有强σ-给体特性的磷光体被证明是活性最高的催化剂。因此,基于膦基双叔丁基-膦酰基-苯磺酸(R = t Bu)的催化剂表现出空前的高活性,可在室温下迅速聚合乙烯以生成高分子量的线性聚合物(M w = 116 000 g mol -1)。还研究了R基团对催化剂引入丙烯酸甲酯能力的影响。