Diphosphites having an open, 2,4-methylated outer unit
Diphosphites having an open, 2,4-methylated outer unit and use thereof in hydroformylation.
1. A compound having structure (I):
where R 1 and R 3 are selected from: —H, —(C 1 -C 12 )-alkyl or —O—(C 1 -C 12 )-alkyl and where R 2 and R 4 are selected from: —H or —O—(C 1 -C 12 ) alkyl.
2. The compound according to claim 1 ,
where R 1 and R 3 are selected from: —H or —(C 1 -C 12 )-alkyl.
3. The compound according to claim 1 ,
where R 1 and R 3 are —(C 1 -C 12 )-alkyl.
4. The compound according to claim 1 ,
where R 1 and R 3 are the same radical.
5. The compound according to claim 1 ,
wherein R 2 and R 4 are —O—(C 1 -C 12 )-alkyl.
6. The compound according to claim 1 ,
where R 2 and R 4 are the same radical.
7. The compound according to claim 1 ,
where R 1 , R 2 , R 3 and R 4 are not all simultaneously —CH 3 .
8. The compound according to claim 1 ,
where the compound has the structure (1):
9. A ligand-metal complex comprising a compound according to claim 1 and a metal selected from: Rh, Ru, Co or Ir.
10. A process comprising the process steps of:
a) initially charging an olefin,
b) adding a compound according to claim 1 and a substance containing a metal selected from: Rh, Ru, Co or Ir,
c) supplying H 2 and CO, and
d) heating the reaction mixture from steps a) to c), with conversion of the olefin to an aldehyde.