Butyrolactone-preparation process

US5962700A · kind A · utility

Assignee

• BASF SE

Inventors

• Marc Heider · Neustadt, DE
• Thomas Ruhl · Bischofswerda, DE
• Jochem Henkelmann · Mannheim, DE
• Susanne Stutz · Weinheim, DE
• Thomas Preiss · Ludwigshafen, DE
• Heinz Rutter · Hochdorf-Assenheim, DE
• Martin Schäfer · Arnstadt, DE
• Arthur Hohn · Tauberbischofsheim, DE

Key dates

• Filing date: Feb 12, 1998
• Grant date: Oct 5, 1999
• Expiry date: Feb 12, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D315/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of butyrolactones of the formula I ##STR1## where the substituents R.sup.1 and R.sup.2 are hydrogen, alkyl or hydroxyalkyl groups, or aryl and trialkylsilyl groups, if appropriate carrying inert: substituents, is described in which an alkyne of the formula II EQU R.sup.1 --C.tbd.C--R.sup.2 II where the substituents have the meanings indicated above, is reacted under reducing conditions at elevated pressure and elevated temperature with carbon monoxide CO and hydrogen in the presence of a transition metal catalyst or with carbon monoxide and water in the presence of a transition metal catalyst.