Method for hydroformylation of unsaturated compounds

US8927776B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Robert Franke · Marl, DE
• Matthias Beller · Ostseebad Nienhagen, DE
• Ralf Jackstell · Rostock, DE
• Reiko Jennerjahn · Sanitz, DE
• Irene Piras · Unterlangenstadt, DE

Key dates

• Filing date: Oct 24, 2011
• Grant date: Jan 6, 2015
• Expiry date: Oct 24, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/18
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for hydroformylation of unsaturated compounds such as olefins and alkynes using mixtures of synthesis gas (CO/H2), in which either the unsaturated compounds and a catalyst are heated to a reaction temperature of 60 to 200° 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:H2 ratio 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.