Preparation of n-butyraldehyde and/or n-butanol

US5892125A · kind A · utility

Assignee

• BASF SE

Inventors

• Jurgen Kanand · Bad Dürkheim, DE
• Michael Roper · Monsheim, DE
• Rocco Paciello · Bad Dürkheim, DE
• Alfred Thome · Speyer, DE

Key dates

• Filing date: Jul 23, 1997
• Grant date: Apr 6, 1999
• Expiry date: Jul 23, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/562
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of n-butyraldehyde and/or n-butanol, in which PA1 a) 1,3-butadiene is caused to react with an amine of the formula I EQU R.sup.1 R.sup.2 NH, I PA1 in which R.sup.1 and R.sup.2 independently denote hydrogen, optionally substituted aliphatic or cycloaliphatic radicals, or aryl or aralkyl radicals or are linked to form a bridging member which can contain hetero atoms, at elevated temperature and under superatmospheric pressure in the presence of a compound of a Group VIIIb element and in the presence of an alkali metal amide or a basic metal oxide to form a mixture of the adducts of the formulas II ##STR1## and III ##STR2## b) the adduct III is isomerized to the adduct II, c) the adduct II is isomerized in the presence of a homogeneous or heterogeneous transition metal element catalyst in the liquid phase or in the presence of a heterogeneous catalyst containing a transition metal element in the gaseous phase to form the enamine of the formula IV ##STR3## and d) n-butyraldehyde and/or n-butanol is/are produced from this enamine.