Process for the preparation of 4-halo-3-oxo-2-alkoxyaminobutyric esters

US4933486A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Eberhard Ritter · Mörfelden, DE
• Claus-Peter Krieg · Frankfurt am Main, DE
• Detlev Keil · Hofheim, DE

Key dates

• Filing date: Mar 22, 1989
• Grant date: Jun 12, 1990
• Expiry date: Mar 22, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C249/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of 4-halo-3-oxo-2-alkoxyiminobutyric esters. A process for the preparation of 4-halo-3-oxo-2-alkoxyiminobutyric esters by solvent-free halogenation of the liquid substrate of a 3-oxo-2-alkoxyaiminobutyric ester with elemental halogen.