The preparation of two new series of chiral 1,2-diamines and their use in the [ZnR2-diamine]-catalyzed asymmetric hydrosilylation of acetophenone with poly(methylhydrosiloxane) (PMHS) in an aprotic medium is reported. The effect of structural modifications of the secondary diamine ligand, in particular a possible cooperative effect of two different types of chiral centers, on the N-benzylic side-arms and on the ethylene bridge of the diamine skeleton, has been investigated. A new diamine ligand giving up to 91% ee is described.
Titolo: | New chiral 1,2-diamines and their use in zinc.catalyzed asymmetric hydrosilylation of acetophenone |
Autore/i: | V. Bette; A. Mortreux; FERIOLI, FEDERICO; MARTELLI, GIANLUCA; SAVOIA, DIEGO; J. F. Carpentier |
Autore/i Unibo: | |
Anno: | 2004 |
Rivista: | |
Abstract: | The preparation of two new series of chiral 1,2-diamines and their use in the [ZnR2-diamine]-catalyzed asymmetric hydrosilylation of acetophenone with poly(methylhydrosiloxane) (PMHS) in an aprotic medium is reported. The effect of structural modifications of the secondary diamine ligand, in particular a possible cooperative effect of two different types of chiral centers, on the N-benzylic side-arms and on the ethylene bridge of the diamine skeleton, has been investigated. A new diamine ligand giving up to 91% ee is described. |
Data prodotto definitivo in UGOV: | 2005-10-12 16:52:29 |
Appare nelle tipologie: | 1.01 Articolo in rivista |
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