Synthesis of new cationic BINAP–ruthenium (II) complexes and their use in asymmetric hydrogenation [BINAP= 2, 2′-bis (diphenylphosphino)-1, 1′-binaphthyl]

K Mashima, K Kusano, T Ohta, R Noyori…

Index: Mashima, Kazushi; Kusano, Koh-hei; Ohta, Tetsuo; Noyori, Ryoji; Takaya, Hidemasa Journal of the Chemical Society, Chemical Communications, 1989 , # 17 p. 1208 - 1210

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Citation Number: 105

Abstract

Reaction of [RuX2 (arene)] 2 (1) and (S)-BINAP gives cationic BINAP–ruthenium complexes of the formula {RuX (arene)[(S)-binap]} Y (2)(X= Cl, Br, and l; Y= Cl, Br, l, BF4, and BPh4; arene= C6H6 and p-MeC6H4CHMe2) which are efficient catalyst precursors for enantioselective hydrogenation of various prochiral alkenic and ketonic substrates [BINAP= 2, 2′-bis (diphenylphosphino)-1, 1′-binaphthyl]; a crystal structure of (2)(with X= Cl, Y= ...