应用化学2017，Vol.34Issue(7)：801-809,9.DOI:10.11944/j.issn.1000-0518.2017.07.160402
多元醇修饰Pd-氮杂环卡宾复合物的制备及其对Suzuki-Miyaura反应的催化行为
Preparation of Polyol Modified Pd-N-Heterocyclic Carbene Complex and Its Catalytic Performance in Suzuki-Miyaura Reaction
摘要
Abstract
The improvement of dispersibility of catalyst is one of the most effective methods to increase its catalytic activity.After the N-heterocyclic carbene(NHC) ligand containing bulky substituent was modified with glycerol through Ullmann reaction, the responding oxygen-containing groups could effectively improve the stability, dispersibility and catalytic efficiency of this catalyst.Then, this NHC ligand was employed to chelate with palladium acetylacetonate to synthesize the responding catalyst.At last, this compound was employed to catalyze the Suzuki-Miyaura coupling reaction.With p-bromoanisole and phenylboronic acid as the model reaction to evaluate the catalytic activity of this palladium complex, this catalyst exhibits high catalytic activity in different conditions.Furthermore, the highest turnover number(TON) value of the catalyst even reaches up to 99000 due to its good dispersibility in various solvents.Moreover, the catalyst shows excellent catalytic performance towards Suzuki-Miyaura reaction when a wide variety of substituents are employed.Compared with tetrakis(triphenylphosphine)-palladium, the catalyst also keeps good catalytic activity and stability in air atmosphere.关键词
氮杂环卡宾/多元醇/Suzuki-Miyaura反应/高效催化Key words
heterocyclic carbine/polyol/Suzuki-Miyaura reaction/high efficiency分类
化学化工引用本文复制引用
彭良溢,李强,王震,钱浩..多元醇修饰Pd-氮杂环卡宾复合物的制备及其对Suzuki-Miyaura反应的催化行为[J].应用化学,2017,34(7):801-809,9.基金项目
福建省高校产学合作项目(2017H61010036)资助 （2017H61010036）
Supported by the Project of Industry-University-Research Collaboration in Fujian Province(No.2017H61010036) （No.2017H61010036）
