Method for producing 4-methyl pyrimidine

US6841672B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Thomas Güthner · Trostberg, DE
• Bernhard Graml · Garching bei München, DE

Key dates

• Filing date: Jul 25, 2001
• Grant date: Jan 11, 2005
• Expiry date: Sep 6, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D239/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process is described for preparing 4-methylpyrimidine by reacting a 4,4-dialkoxy-2-butanone with a formamidine salt, optionally in the presence of a solvent or diluent, at temperatures of from 80 to 180° C. In this way, 4-methylpyrimidine can be obtained in a substantially simpler manner and at the same time in higher yields than are possible by means of existing processes.