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1. (WO2018044827) STABLE HYDROFORMYLATION CATALYST FOR PREPARATION OF HIGH N/ISO RATIO ALDEHYDE PRODUCT

Pub. No.:    WO/2018/044827    International Application No.:    PCT/US2017/048999
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 30 01:59:59 CEST 2017
IPC: C07C 45/50
C07C 47/02
C07F 9/50
C07F 17/02
B01J 31/24
Applicants: EASTMAN CHEMICAL COMPANY
Inventors: DEVON, Thomas, James
Title: STABLE HYDROFORMYLATION CATALYST FOR PREPARATION OF HIGH N/ISO RATIO ALDEHYDE PRODUCT
Abstract:
A new stable, catalytically active, tetradentate organophosphorus modified rhodium hydroformylation catalyst has been discovered that is capable of producing aldehyde products with a high linear / branched product ratio from linear olefins. The tetradentate organophosphorus modifier is a tetrasubstituted 2,2',2",5'-tetramethyl-1,1':4'-1 "-terphenyl, whereby, each methyl group has one hydrogen substituted by an R, R'-diorganophosphine moiety. The R, R' may comprise aromatic, alkyl, arylalkyl and alkylaryl groups. The precursor 2,2',2",5'-tetramethyl-1,1':4',1 "-terphenyl hydrocarbon may be prepared from para-xylene and toluene derivatives.