Process for preparing guanidine derivatives

US6143929A · kind A · utility

Assignee

• BASF SE

Inventors

• Knut Kessel · Mannheim, DE
• Michael Kluge · Ludwigshafen, DE
• Thomas Greindl · Bad Dürkheim, DE
• Thomas Bogenstätter · Bad Dürkheim, DE
• Günter Scherr · Ludwigshafen, DE
• Matthias Rauls · Ludwigshafen, DE
• Richard van Gelder · Heerlen, NL

Key dates

• Filing date: Dec 13, 1999
• Grant date: Nov 7, 2000
• Expiry date: Dec 13, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C277/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing guanidine derivatives, in particular creatine, is described and entails an O-alkylisourea salt and a primary or secondary amine being reacted in the presence of crystals of a guanidine derivative.