Preparation of carbonyl compounds

US6255534A · kind A · utility

Assignee

• BASF SE

Inventors

• Dirk Demuth · Schallstadt, DE
• Thomas Fetzer · Speyer, DE
• Volker Pratsch · Mannheim, DE
• Thomas Martin WENDRICH · Eisenberg (Pfalz), DE
• Helmuth Menig · Friedelsheim, DE
• Ludwig Wambach · Schwetzingen, DE
• Klaus Harth · Altleiningen, DE

Key dates

• Filing date: Feb 1, 1999
• Grant date: Jul 3, 2001
• Expiry date: Feb 1, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/38
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Carbonyl compounds of the formula ##STR1## where R.sup.1 is a hydrogen atom or an alkyl radical having from 1 to 3 carbon atoms, R.sup.2 is a hydrogen atom, an unsubstituted or C.sub.1 -C.sub.3 -alkyl-monosubstituted to -trisubstituted C.sub.2 -C.sub.4 -alkenyl radical or a radical of the formula ##STR2## where R.sup.3 is a hydrogen atom or together with R.sup.4 is an oxygen atom, R.sup.4 is the radical OR.sup.6 or together with R.sup.3 is an oxygen atom, R.sup.5 is a hydrogen atom, an alkyl radical having from 1 to 8 carbon atoms, an unsubstituted or C.sub.1 -C.sub.3 -alkyl-monosubstituted to -trisubstituted C.sub.2 -C.sub.4 -alkenyl radical or a cyclohexyl or cyclopentyl radical and R.sup.6 is an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula --CH.sub.2 --CHO or --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CHO, are prepared by gas-phase oxidation of methanol or alcohols of the formula ##STR3## where R.sup.1 and R.sup.5 are as defined above, by means of an oxygen-containing gas in the presence of copper- and/or silver-containing catalysts, the catalyst system used comprising at least one phosphorus-containing copper- and/or …