Patent ID: 7081533
Filing Date: 2006-07-25
Classification: B01J,C07B,C07C,C07F

Abstract:
1. A bidentate organophosphorus ligand of the formula (Ia) or (Ib), wherein o and p can each be, independently of one another, 0 or 1, Ar is part of a six-membered aromatic ring system or a 5–6-membered heteroaromatic ring system, wherein the heteroaromatic ring system can contain 1–3 nitrogen atoms, 1 oxygen atom or 1 sulfur atom in the positions A, B, D and E, CyAli is part of a 5–6-membered cycloaliphatic or heterocycloaliphatic ring system, wherein the hetercycloaliphatic ring system can contain 1–2 heteroatoms from the group consisting of N, O and S in the positions F, G, H and I, R R and two of these substituents may also be bridged, m and n are each, independently of one another, 1 or 0, and P is a trivalent phosphorus atom.