Method for separating contaminants from 3-(2'-Acetoxy-Ethyl-Dihydro-2(3H)-Furanone

US6201135A · kind A · utility

Assignee

• BASF SE

Inventors

• Volker Maywald · Ludwigshafen, DE
• Norbert Gotz · Worms, DE
• Thomas Kukenhohner · Böhl-Iggelheim, DE
• Dirk Borchers · Birkenheide, DE
• Hartmann Konig · Heidelberg, DE
• Horst Hartmann · Dresden, DE
• Rupert Wagner · Worms, DE

Key dates

• Filing date: Apr 27, 2000
• Grant date: Mar 13, 2001
• Expiry date: Apr 27, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/33
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for removing impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone (I), which comprises initially preparing the 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone containing the undesirable impurities in a manner known per se by acetylating 3-(2'-hydroxylethyl)-dihydro-2(3H)-furanone, subsequently treating it with strong mineral acids and finally removing the decomposition products of the undesirable impurities from I.