Preparation of substituted butenes

US6329555A · kind A · utility

Assignee

• BASF SE

Inventors

• Maik Aron · Freinsheim, DE
• Ralf Böhling · Griesheim, DE
• Peter Zehner · Ludwigshafen, DE

Key dates

• Filing date: Nov 2, 1999
• Grant date: Dec 11, 2001
• Expiry date: Nov 2, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/513
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Described is a process for preparing substituted butenes of the formula I and/or II, ##STR1## where the radical R is unsubstituted or mono- or di-C.sub.1 -C.sub.10 -alkoxy-substituted or mono- or dihydroxy-substituted C.sub.2 -C.sub.20 -alkyl or alkenyl or is C.sub.6 -C.sub.10 -aryl, C.sub.7 -C.sub.11 -aralkyl or methyl by reacting 1,3-butadiene with an alcohol of the formula ROH in which R is as defined in the presence of an acidic particulate catalyst insoluble in the reaction medium, which involves contacting the butadiene, the alcohol and the catalyst in a fluidized bed reactor which is flow-approached from below and is operated at above the loosening point.