Enantioselective Hydrophosphination of Enones with Diphenylphosphine Catalyzed by Bis(imidazoline) NCN Pincer Palladium(II) Complexes

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• 作者：Xin-Qi Hao ; Yong-Wei Zhao ; Jing-Jing Yang ; Jun-Long Niu ; Jun-Fang Gong ; Mao-Ping Song
• 刊名：Organometallics
• 出版年：2014
• 出版时间：April 14, 2014
• 年：2014
• 卷：33
• 期：7
• 页码：1801-1811
• 全文大小：489K
• 年卷期：v.33,no.7(April 14, 2014)
• ISSN：1520-6041

文摘

A series of chiral NCN pincer Pd(II) complexes with 1,3-bis(2鈥?imidazolinyl)phenyl (Phebim) ligands were synthesized via the C鈥揌 activation or oxidative addition method. A dinuclear macrocyclic Pd(II) complex was also prepared by reaction of the Phebim-H ligand with PdCl₂. All of the new compounds were fully characterized, and X-ray single-crystal structures were obtained for two of the complexes. The Pd(II) complexes were successfully applied to enantioselective hydrophosphination of various enones with diphenylphosphine, providing optically active phosphine derivatives in good yields with enantioselectivities of up to 94% ee.