Tetrahedron Asymmetry p. 1011 - 1018 (1996)
Update date:2022-08-11
Topics:
Kreuzfeld, Hans-Joern
Schmidt, Ute
Doebler, Christian
Krause, Hans Walter
The enantiomers of PINDOPHOS, the aminophosphine phosphinite derivative of the commercial β-blocker Pindolol, were prepared and used as ligands in the rhodium catalyzed asymmetric hydrogenation of non-proteinogenic amino acid precursors. The isolated (R)- and (S)-configured rhodium complexes are highly active catalysts leading to (L)- or (D)-amino acids. Enantiomeric excesses between 92 and 95% ee could be realized. The newly obtained amino acid derivatives were fully characterized by NMR spectroscopy.
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