Evonik Degussa Gmbh

Evonik Operations Gmbh

Jie Liu

Robert Franke

Matthias Beller

Ralf Jackstell

Kaiwu Dong

Rui Sang

Haoquan Li

Katrin Marie Dyballa

Robert Francke

Robert Beller

Markovnikov-selective palladium catalyst for carbonylation of alkynes is formed from a bisphosphite having formula (1):  The carbonylation catalyst is suited for the preparation of a branched heteroarene-keto product from an alkyne substrate, CO and heterocycle in high yields with low amounts of the linear product.

Markovnikov-selective palladium catalyst for carbonylation of alkynes with heteroarenes

Process for methoxycarbonylation with formic acid and methanol.

Methoxycarbonylation with formic acid and methanol

A catalytic process for the methoxycarbonylation of olefins where formic acid is the CO source. The process includes the steps of forming a reaction mixture where methanol and formic acid are added at a volume ratio in the range from 1.55:0.45 to 1.1:09. The methanol-formic acid ratio enhances both the rate of conversion and methyl ester yield ether produced. The catalysts used is a palladium/benzene-base diphosphine ligand complex.

Methoxycarbonylation with formic acid as CO source

The invention relates to a process for doubly carbonylating allyl alcohols to the corresponding diesters, wherein a linear or branched allyl alcohol is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.

Process for double carbonylation of allyl alcohols to corresponding diesters

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Solna, Sweden

Jie Liu