Method for the production of acyl glycinates by means of direct oxidation

US8350080B2 · kind B2 · utility

Assignee

• Clariant Finance (BVI) Limited · VG

Inventors

• Peter Klug · Großostheim, DE
• Achim Stankowiak · Altötting, DE
• Oliver Franke · Munich, DE
• Franz-Xaver Scherl · Altötting, DE
• Ulf Pruesse · Braunschweig, DE
• Nadine Decker · Braunschweig, DE
• Klaus-Dieter Vorlop · Braunschweig, DE

Key dates

• Filing date: Jan 7, 2009
• Grant date: Jan 8, 2013
• Expiry date: Dec 14, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C231/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method is described for producing acyl glycinate salts of formula (II)in which R1 represents a saturated linear or branched alkyl radical comprising 1 to 21 carbon atoms or a monounsaturated or polyunsaturated linear or branched alkenyl radical comprising 2 to 21 carbon atoms, and B represents a cation, and/or the corresponding protonated acyl glycinic acid. Said method is characterized in that one or more fatty acid monoethanol amides of formula (I)in which R1 has the meaning indicated above is/are oxidized with oxygen in the presence of an optionally supported bimetallic catalyst consisting of gold and a metal from group VIII of the periodic table in the alkaline medium in order to obtain one or more acyl glycinate salts of formula (II). In order to produce the protonated acyl glycinic acids, the acyl glycinate salt/s of formula (II) is/are additionally reacted with an acid.