Process for preparing acylglycinates by means of direct oxidation

US8093414B2 · 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: Aug 13, 2007
• Grant date: Jan 10, 2012
• Expiry date: Aug 20, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C231/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process is described for preparing acylglycinate salts of the formula (II) in which R1 is a saturated linear or branched alkyl radical having from 1 to 21 carbon atoms or a mono- or polyunsaturated linear or branched alkenyl radical having from 2 to 21 carbon atoms, and B is a cation derived from a base, and/or the corresponding protonated acylglycines, characterized in that one or more fatty acid monoethanolamides of the formula (I) in which R1 is as defined above is oxidized with oxygen in the presence of a transition group metal catalyst in an alkaline medium to give one or more acylglycinate salts of the formula (II), and, in the case of preparation of the protonated acylglycines, the acylglycinate salt(s) of the formula (II) is additionally reacted with an acid.