Pt-biphenyl-iodine complex and Pt-biphenyl-bromine complex
Pt-biphenyl-iodine complex and Pt-biphenyl-bromine complex, and the use thereof for catalysis of a hydroformylation reaction.
1. A complex comprising:
a) Pt;
b) a ligand corresponding to formula (I):
where R 1 , R 2 , R 3 and R 4 are selected from: —(C 1 -C 12 )-alkyl or —O—(C 1 -C 12 )-alkyl, and R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are selected from: —H, —(C 1 -C 12 )-alkyl, —O—(C 1 -C 12 )-alkyl or —(C 6 -C 20 )-aryl;
c) an iodine ligand or a bromine ligand.
2. The complex according to claim 1 , where R 1 and R 4 are —(C 1 -C 12 )-alkyl.
3. The complex according to claim 1 , where R 2 and R 3 are —O—(C 1 -C 12 )-alkyl.
4. The complex according to claim 1 , where R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are —H.
5. The complex according to claim 1 , wherein the compound of formula (I) has the structure (1):
6. The complex according to claim 1 , wherein the complex has exactly one ligand corresponding to formula (I).
7. The complex according to claim 1 ,
wherein the complex has two iodine ligands.
8. The complex according to claim 7 ,
wherein the complex has exactly two iodine ligands.
9. The complex according to claim 1 , wherein the complex has at least two bromine ligands.
10. The complex according to claim 9 ,
wherein the complex has exactly two bromine ligands.
11. In a hydroformylation process comprising contacting a hydroformylation substrate with a catalyst, wherein the improvement comprises contacting the hydroformylation substrate with a complex according to claim 1 .