The stereochemical outcome of the condensation reactions of aliphatic and aromatic aldehydes with the metal complexes 1 is strongly dependent on the nature of the metal ion. The copper(II) complex la only affords threo-P-hydroxy-cr-amino acids with fairly good enantiomeric excesses when reacting with aromatic aldehydes. The zinc(II) complex Ib gives a mixture of three and erythro diastereoisomers with a predominance of the erythro forms in the case of aromatic aldehydes.
Titolo: | ASYMMETRIC-SYNTHESIS OF BETA-HYDROXY-ALPHA-AMINO ACIDS BY CONDENSATION OF ALIPHATIC AND AROMATIC-ALDEHYDES WITH ZINC(II) AND COPPER(II) COMPLEXES OF (1R)-3-HYDROXYMETHYLENE BORNAN-2-ONE GLYCINE IMINES |
Autori: | SELLO, GUIDO GIOVANNI (Penultimo) |
Settore Scientifico Disciplinare: | Settore CHIM/06 - Chimica Organica |
Data di pubblicazione: | 1994 |
Rivista: | |
Tipologia: | Article (author) |
Appare nelle tipologie: | 01 - Articolo su periodico |
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