Process for preparing folic acid

US6348593B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Jörg Botzem · Schifferstadt, DE
• Hagen Jaedicke · Ludwigshafen, DE
• Michael Sasha John · Larchmont, US
• Joachim Paust · Schifferstadt, DE

Key dates

• Filing date: Feb 3, 2000
• Grant date: Feb 19, 2002
• Expiry date: Feb 3, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D475/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing folic acid, which comprises reacting a tetraalkoxypropanol of the general formula I, in which the substituents R are C1-C4-alkyl, with triaminopyrimidone of the formula II and p-aminobenzoyl-L-glutamic acid of the formula III