Oligomerization of Ethylene Using a Diphosphine Palladium Catalyst

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• 作者：David BézierOlafs Daugulis ; Maurice Brookhart
• 刊名：Organometallics
• 出版年：2017
• 出版时间：January 23, 2017
• 年：2017
• 卷：36
• 期：2
• 页码：443-447
• 全文大小：374K
• ISSN：1520-6041

文摘

The palladium diphosphine complex <b>4b> converts ethylene to hyperbranched unsaturated oligomers (Mb>nb> ≈ 330 g/mol) at 22 °C. In addition to the high stability of this catalyst observed at temperatures up to 75 °C, an increase of the reaction temperature leads to a decrease in branching densities of the oligomers, in sharp contrast to the palladium and nickel diimine catalyst systems. One-pot oligomerizations/hydrogenations were carried out to form hyperbranched saturated oligomers.