Process for preparing TCD-dialdehyde

US7015362B2 · kind B2 · utility

Assignee

• CELANESE CHEMICALS EUROPE GMBH · DE

Inventors

• Peter Lappe · Dinslaken, DE
• Helmut Springer · Dinslaken, DE
• Rainer Lukas · Essen, DE

Key dates

• Filing date: Oct 18, 2004
• Grant date: Mar 21, 2006
• Expiry date: Oct 30, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2603/68
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing 3(4),8(9)-bisformyltricyclo[5.2.1.02.6]decane by hydroformylating dicyclopentadiene with subsequent distillation wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in the first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (III) compounds in complex-bound form, of group VIII of the Period Table of the Elements to give 8(9)-bisformyltricyclo[5.2.1.02.6]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-bisformyltricyclo[5.2.1.02.6]dec-3-ene is converted, in homogeneous organic phase in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.02.6]decane.