Evonik Degussa Gmbh

Evonik Operations Gmbh

Evonik Oxeno Gmbh & Co. Kg

Kaiwu Dong

Robert Franke

Matthias Beller

Ralf Jackstell

Dirk Fridag

Katrin Marie Dyballa

Dieter Hess

Frank Geilen

Helfried Neumann

Rui Sang

Peter Kucmierczyk

Jie Liu

Jiawang Liu

Reiko Jennerjahn

Ralph Jackstell

Xiangjie Fang

Samet Gülak

Xianjie Fang

Beller Matthias,

Rui Lui Sang

Helfreid Neumann

Process for the alkoxycarbonylation of trivinylcyclohexane.

Alkoxycarbonylation of trivinylcyclohexane

The invention relates to a process comprising the following process steps: where

Process for the alkoxycarbonylation of alcohols

Propyl-bridged diphosphine compounds, metal complexes of these compounds and the use thereof for alkoxycarbonylation.

Propyl-bridged diphosphine ligands for alkoxycarbonylation

Process comprising the following process steps:

Process for the alkoxycarbonylation of olefins in a medium having a low Br&#xf8;nsted acid concentration

Process for the direct conversion of alkenes to carboxylic acids.

Process for the direct conversion of alkenes to carboxylic acids

The invention relates to a process comprising the following process steps: whereRis selected from &#x2014;(C-C)-alkyl, &#x2014;O&#x2014;(C-C)-alkyl, &#x2014;O&#x2014;(C-C)-aryl, &#x2014;(C-C)-aryl, &#x2014;(C-C)-cycloalkyl, &#x2014;(C-C)-heterocycloalkyl, &#x2014;(C-C)-heteroaryl;Ris selected from &#x2014;(C-C)-aryl, &#x2014;(C-C)-cycloalkyl, &#x2014;(C-C)-heterocycloalkyl, &#x2014;(C-C)-heteroaryl;Ris &#x2014;(C-C)-heteroaryl;and R, Rand Rmay each independently be substituted by one or more substituents selected from&#x2014;(C-C)-alkyl, &#x2014;(C-C)-cycloalkyl, &#x2014;(C-C)-heterocycloalkyl, &#x2014;O&#x2014;(C-C)-alkyl, &#x2014;O&#x2014;(C-C)-alkyl-(C-C)-aryl, &#x2014;O&#x2014;(C-C)-cycloalkyl, &#x2014;S&#x2014;(C-C)-alkyl, &#x2014;S&#x2014;(C-C)-cycloalkyl, &#x2014;COO&#x2014;(C-C)-alkyl, &#x2014;COO&#x2014;(C-C)-cycloalkyl, &#x2014;CONH&#x2014;(C-C)-alkyl, &#x2014;CONH&#x2014;(C-C)-cycloalkyl, &#x2014;CO&#x2014;(C-C)-alkyl, &#x2014;CO&#x2014;(C-C)-cycloalkyl, &#x2014;N&#x2014;[(C-C)-alkyl], &#x2014;(C-C)-aryl, &#x2014;(C-C)-aryl-(C-C)-alkyl, &#x2014;(C-C)-aryl-O&#x2014;(C-C)-alkyl, &#x2014;(C-C)-heteroaryl, &#x2014;(C-C)-heteroaryl-(C-C)-alkyl, &#x2014;(C-C)-heteroaryl-O&#x2014;(C-C)-alkyl, &#x2014;COOH, &#x2014;OH, &#x2014;SOH, &#x2014;NH, halogen.

Process for the alkoxycarbonylation of ethylenically unsaturated compounds with monophosphine ligands

Process for the direct conversion of diisobutene to a carboxylic acid.

Process for the direct conversion of diisobutene to a carboxylic acid

Process for Pd-catalyzed hydroxycarbonylation of diisobutene:acetic acid/diisobutene ratio.

Process for Pd-catalyzed hydroxycarbonylation of diisobutene: acetic acid/diisobutene ratio

Process for Pd-catalyzed hydroxycarbonylation of diisobutene:ligand/Pd ratio.

Process for Pd-catalyzed hydroxycarbonylation of diisobutene: ligand/Pd ratio

Process for methoxycarbonylation with formic acid and methanol.

Methoxycarbonylation with formic acid and methanol

Process for Pd-catalyzed hydroxycarbonylation of diisobutene:sulfuric acid/ligand ratio.

Process for Pd-catalyzed hydroxycarbonylation of diisobutene: sulfuric acid/ligand ratio

A process for Pd-catalyzed hydroxycarbonylation of diisobutene in an acetic acid solvent in the presence of a ligand having the following structure: In contrast to reaction solvents such as formic acid or 3,5,5 hexanoic acid the conversion rates were improved and greater than 90% at a reaction temperature of 120&#xb0; C. and CO pressure of 40 bar.

Process for Pd-catalyzed hydroxycarbonylation of diisobutene: effect of solvent

Process for the alkoxycarbonylation of ethers

Process for Pd-catalyzed hydroxycarbonylation of diisobutene: ratio of 3,5,5-trimethylhexanoic acid/HO.

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Bo Zhou, China

Kaiwu Dong