Highly enantioselective hydroformylation of olefins catalyzed by rhodium (I) complexes of new chiral phosphine-phosphite ligands
…, N Sakai, T Nanno, T Higashijima, S Mano…
Index: Nozaki, Kyoko; Sakai, Nozomu; Nanno, Tetsuo; Higashijima, Takanori; Mano, Satoshi; Horiuchi, Toshihide; Takaya, Hidemasa Journal of the American Chemical Society, 1997 , vol. 119, # 19 p. 4413 - 4423
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Citation Number: 387
Abstract
A new chiral phosphine-phosphite ligand,(R)-2-(diphenylphosphino)-1, 1'-binaphthalen-2'-yl (S)-1, 1'-binaphthalene-2, 2'-diyl phosphite [(R, S)-BINAPHOS,(R, S)-2a], was synthesized. Its Rh (I) complex was prepared, and its structure has been characterized by 1H and 31P NMR spectroscopy. Using Rh (I) complexes of (R, S)-2a and its enantiomer, highly enantioselective hydroformylation of styrene has been performed (94% ee, iso/normal= 88 ...
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