Evonik Degussa Gmbh

Evonik Industries Ag

Reiko Jennerjahn

Robert Franke

Matthias Beller

Ralf Jackstell

Dieter Hess

Dirk Fridag

Katrin Marie Dyballa

Frank Geilen

Kaiwu Dong

Helfried Neumann

Samet Gülak

Xiangjie Fang

Daniela Cozzula

Ivana Fleischer

Irene Piras

The invention relates to a compound of formula (1)  The invention further relates to Pd complexes comprising the compound according to the invention and to the use thereof in alkoxycarbonylation.

Phosphine ligand and palladium catalysts based thereon for the alkoxycarbonylation of ethylenically unsaturated compounds

The invention provides a process for preparing esters from formates and olefinically unsaturated compounds with catalysts based on palladium compounds. In addition, the invention discloses a polyphasic reaction mixture and nonyl methyl ester mixtures prepared by the process according to the invention.

Process for preparing esters from formates and olefinically unsaturated compounds

The invention relates to a method for hydroformylation of unsaturated compounds such as olefins and alkynes using mixtures of synthesis gas (CO/H), in which either the unsaturated compounds and a catalyst are heated to a reaction temperature of 60 to 200&#xb0; C. and the synthesis gas is then added, or the unsaturated compounds and the catalyst are brought into contact with pure CO at normal temperature in a preformation step, then are heated to reaction temperature and on reaching the reaction temperature the CO is replaced by the synthesis gas. The pressure is 1 to 200 bar and the CO:Hratio in the synthesis gas is in the range from 1:1 to 50:1. The iridium catalyst used comprises a phosphorus-containing ligand in the iridium:ligand ratio in the range from 1:1 to 1:100. With high catalyst activities and low catalyst use, very high turnover frequencies are achieved.

Method for hydroformylation of unsaturated compounds

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Sanitz, Germany

Reiko Jennerjahn