Claims
- 1. A catalyst comprising at least one rhodium complex with a phosphonite ligand of formula I whereinR1 is a C3-C6-chain wherein the carbon atoms are connected through single bonds or through single bonds and from 1 to 3 double bonds, which chain is optionally fused with from 1 to 3 rings selected from the group consisting of aryl and hetaryl, wherein the rings are unsubstituted or carry from 1 to 3 substituents selected from the group consisting of alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl and NE1E2, E1 and E2 are identical or different and each is alkyl, cycloalkyl or aryl, m is 0 or 1, and the moieties and are identical or different and denote each a 5- to 8-membered heterocycle which is optionally fused with from 1 to 3 rings selected from the group consisting of cycloalkyl, aryl and hetaryl, wherein the rings are unsubstituted or carry from 1 to 3 substituents selected from the group consisting of alkyl, alkoxy, halogen, nitro, cyano and carboxyl,or a salt thereof.
- 2. The catalyst defined in claim 1, wherein A or D represents a biradical selected from the group consisting of 2,2′-biphenylene, 2,2′-binaphthylene and 2,3-xylylene, wherein the biradical is unsubstituted or carries from 1 to 3 substituents selected from the group consisting of alkyl, alkoxy and halogen.
- 3. The catalyst defined in claim 1, wherein R1 is a radical of formula II.1, II.2, II.3 or II.4 whereinR2 and R3 are independently hydrogen, alkyl, alkoxy, halogen, trifluoromethyl, nitro or cyano, and R4 is hydrogen or alkyl, or is aryl, which is unsubstituted or substituted by alkyl, alkoxy, halogen, trifluoromethyl, nitro or cyano.
- 4. The catalyst defined in claim 2, wherein R4 is hydrogen or methyl, or is phenyl, which is unsubstituted or substituted by alkyl, alkoxy, halogen, trifluoromethyl, nitro or cyano.
- 5. The catalyst defined in claim 1, wherein the phosphonite ligand is selected from the group consisting of ligands of formulae Ia to Ig
- 6. The catalyst defined in claim 1, further comprising at least one additional ligand selected from the group consisting of halides, amines, carboxylates, acetylacetonate, arylsulfonates, alkylsulfonates, hydride, CO, olefins, dienes, cycloolefins, nitriles, N-containing heterocycles, aromatics, heteroaromatics, ethers, PF3, phosphine, phosphinite and phosphite ligands, wherein the phosphine, phosphinite and phosphite ligants are monodentate, bidentate or polydentate.
- 7. A process for hydroformylating compounds containing at least one ethylenically unsaturated double bond by reacting said compounds with carbon monoxide and water in the presence of a hydroformylation catalyst, wherein the hydroformylation catalyst is the catalyst defined in claim 1.
- 8. The process of claim 7, wherein the catalyst is prepared in situ by reacting at least one phosphonite ligand of formula I, a compound or a complex of a metal of the VIIIth transition group and optionally an activating agent in an inert solvent under the hydroformylation conditions.
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 10 794 |
Mar 1998 |
DE |
|
Parent Case Info
This application is A 371 of PCT/EP99/01547 Mar. 11, 1999.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/EP99/01597 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/46044 |
9/16/1999 |
WO |
A |
US Referenced Citations (6)
Foreign Referenced Citations (3)
Number |
Date |
Country |
97255 610 |
Sep 1997 |
JP |
WO 9530680 |
Nov 1995 |
WO |
WO 9913983 |
Mar 1999 |
WO |
Non-Patent Literature Citations (1)
Entry |
Beller et al. “Progress in hydroformulation and carbonylation” Journal of Molecular Catalyst vol. 104 (1995) pp. 17-85. |