Additive Effects of Amines on Asymmetric Hydrogenation of Quinoxalines Catalyzed by Chiral Iridium Complexes

…, R Schwenk, T Ohshima, Y Kita, A Togni…

文献索引：Nagano, Takuto; Iimuro, Atsuhiro; Kita, Yusuke; Mashima, Kazushi; Schwenk, Rino; Togni, Antonio; Ohshima, Takashi Chemistry--A European Journal, 2012 , vol. 18, # 37 p. 11578 - 11592,15

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被引用次数: 28

摘要

Abstract The additive effects of amines were realized in the asymmetric hydrogenation of 2- phenylquinoxaline, and its derivatives, catalyzed by chiral cationic dinuclear triply halide- bridged iridium complexes [{Ir (H)[diphosphine]} 2 (μ-X) 3] X (diphosphine=(S)-2, 2′-bis (diphenylphosphino)-1, 1′-binaphthyl [(S)-BINAP],(S)-5, 5′-bis (diphenylphosphino)-4, 4′-bi-1, 3-benzodioxole [(S)-SEGPHOS],(S)-5, 5′-bis (diphenylphosphino)-2, 2, 2′, 2′ ...