J. Stille, H. Su, P. Brechot
Apr 1, 1991
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Organometallics
Abstract
Three complexes of Pt(II) containing the chiral ligands 1-(tert-butoxycarbonyl)-(2S,4S)-2-[(diphenylphosphino)methyl]-4-(dibenzophospholyl)pyrrolidine, 1-(tert-butoxycarbonyl)-(2S-4S)-2-[(dibenzophospholyl)methyl]-4-(diphenylphosphino)pyrrolidine, and 1-(tert-butoxycarbonyl)-(2S,4S)-4-(dibenzophospholyl)-2-[(dibenzophospholyl)methyl]pyrrolidine were synthesized. Asymmetric hydroformylation of styrene was examined with use of platinum complexes of these three ligands, as well as Pt II BPPM, in the presence of stannous chloride as catalyst