US 11,739,042 B2
Process for hydroformylation of olefins using Pt and iodine or bromine
Carolin Schneider, Monheim am Rhein (DE); Ralf Jackstell, Rostock (DE); Matthias Beller, Ostseebad Nienhagen (DE); and Robert Franke, Marl (DE)
Assigned to EVONIK OPERATIONS GMBH, Essen (DE)
Filed by EVONIK OPERATIONS GMBH, Essen (DE)
Filed on Dec. 13, 2022, as Appl. No. 18/64,948.
Claims priority of application No. 21215374 (EP), filed on Dec. 17, 2021.
Prior Publication US 2023/0192583 A1, Jun. 22, 2023
Int. Cl. C07C 45/50 (2006.01); B01J 31/24 (2006.01); B01J 37/04 (2006.01)
CPC C07C 45/505 (2013.01) [B01J 31/2457 (2013.01); B01J 37/04 (2013.01); B01J 2231/321 (2013.01); B01J 2531/828 (2013.01)] 15 Claims
 
1. A process comprising the process steps of:
a) initially charging an olefin;
b) adding a compound of formula (I):

OG Complex Work Unit Chemistry
where R1, R2, R3, R4, R5, R6, R7 and R8 are selected from: —H, —(C1-C12)-alkyl or —(C6-C20)-aryl, and
R9 and R10 are selected from: —(C1-C12)-alkyl or —(C6-C20)-aryl,
and, if R1, R2, R3, R4, R5, R6, R7, R8, R9, R10are —(C6-C20)-aryl, the aryl ring may have substituents selected from: —(C1-C12)-alkyl or —O—(C1-C12)-alkyl;
c) adding a Pt compound capable of forming a complex;
d) adding an iodine compound or bromine compound;
e) feeding in CO and H2;
f) heating the reaction mixture from steps a) to e), to convert the olefin to an aldehyde.