Process to prepare a terminal aldehyde

Details Process to prepare a terminal aldehyde Process to prepare a terminal aldehyde

1997-04-28

2000-01-25

McKane, Joseph K.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4550

Patent

active

060180811

ABSTRACT:
A hydroformylation process for preparating a terminal aldehyde involves reacting an ethylenically unsaturated organic compound with carbon monoxide and hydrogen in the presence of a catalyst system iridium or rhodium and a bidentate organic phosphite ligand wherein the two phosphorus atoms of the phopshite ligand are linked with a 2,2'-dihydroxyl-1,1'-binapthalene bridging group having the following structure (Q): ##STR1## in which R.sup.1 and R.sup.2 are substituents other than hydrogen and in which R.sup.3 and R.sup.4 are the same or different substituted monovalent aryl groups and/or any one of OR.sup.3 and OR.sup.4 connected to one phosphorus atom forms an --O--R.sup.5 --O-group, where R.sup.5 is a divalent organic group containing one or two aryl groups.

REFERENCES:
patent: 4769498 (1988-09-01), Billing et al.
patent: 5210260 (1993-05-01), Bohshar et al.
patent: 5235113 (1993-08-01), Sato et al.

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