Process for the preparation of .alpha.-alkylacroleins

US4496770A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerd Duembgen · Schifferstadt, DE
• Gerd Fouquet · Neustadt, DE
• Richard Krabetz · Tauberbischofsheim, DE
• Ekhart Lucas · Monsheim, DE
• Franz Merger · Bischofswerda, DE
• Friedbert Nees · Blankenloch, DE

Key dates

• Filing date: Mar 28, 1983
• Grant date: Jan 29, 1985
• Expiry date: Mar 28, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/75
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

.alpha.-Alkylacroleins are prepared by a process wherein an alkanal is reacted with formaldehyde in the presence of a secondary amine and in the presence or absence, of an acid, in the liquid phase, under superatmospheric pressure and at above 150.degree. C., for not more than 25 minutes. The .alpha.-alkylacroleins obtainable by the process are useful starting materials for dyes, drugs and pesticides.