Preparation of ketones

US4950763A · kind A · utility

Assignee

• BASF SE

Inventors

• Charles Schommer · Ludwigshafen, DE
• Klaus Ebel · Lampertheim, DE
• Toni Dockner
• Matthias Irgang · Heidelberg, DE
• Wolfgang Hoelderich · Bischofswerda, DE
• Harald Rust · Bochum, DE

Key dates

• Filing date: Jul 18, 1989
• Grant date: Aug 21, 1990
• Expiry date: Jul 18, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Ketones of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 independently of one another are each alkyl, cycyloalkyl, arylalkyl, aryl or hetaryl, and one or more of the radicals R.sup.1 and R.sup.2 carry one or more hydrogen atoms on the .alpha.-carbon atom, are prepared by reacting two carboxylic acids of the general formulae (IIa/IIb), R.sup.1 --COOH (IIa) and R.sup.2 --COOH (IIb) or by reacting a carboxylic acid R.sup.1 --COOH (IIa) and a ketone ##STR2## or by reacting a mixture of IIa, IIb and Ib, in the gas phase in the presence of a catalyst, by a process in which a catalyst is used whose active material contains at least 50% by weight of titanium dioxide having a specific surface area greater than 10 m.sup.2 /g.0.