Process for preparing guanidine derivatives

US6509497B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Knut Kessel · Mannheim, DE
• Michael Kluge · Ludwigshafen, DE
• Thomas Bogenstätter · Bad Dürkheim, DE
• Günter Scherr · Ludwigshafen, DE

Key dates

• Filing date: Feb 7, 2000
• Grant date: Jan 21, 2003
• Expiry date: Feb 7, 2020

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 continuously combining a cyanamide derivative and a primary or secondary amine in the presence of crystals of the guanidine derivative.