Abstract
Appropriate gauche steric interactions between the N-substituents and the phosphanylmethyl groups (see picture, top right) in the novel 1,4-diphosphane ligands 1 having an imidazolidin-2-one backbone affect the conformational flexibility of the seven-membered chelate ring formed by coordination to a metal atom. Thus, Rh complexes of 1 are excellent catalysts for enantioselective hydrogenation of enamides (bottom, cod= cyclooacta-1,5-diene).
Original language | English |
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Pages (from-to) | 847-849 |
Number of pages | 3 |
Journal | Angewandte Chemie - International Edition |
Volume | 41 |
Issue number | 5 |
DOIs | |
State | Published - 1 Mar 2002 |
Keywords
- Asymmetric catalysis
- Hydrogenation
- P ligands
- Rhodium