Process for preparing N-alkyl ammonium acetonitrile compounds

US6235218A · kind A · utility

Assignee

• THE CLOROX COMPANY · US

Inventors

• Ulrich Annen · Nümbrecht, DE
• James E. Deline · Mullica Township, US
• Lafayette D. Foland · Dublin, US
• Kevin A. Klotter · Livermore, US
• Josef Muller · Lakewood, US
• Michael Muller · Bensberg, DE
• Klaus Mundinger · Schifferstadt, DE
• Martin A. Phillippi · Pleasanton, US
• Alfred Ruland · Schriesheim, DE
• Wolfgang Schafer · Düren, DE
• Gregor Schurmann · Hannover, DE
• Rudi Widder · Leimen, DE
• Alfred G. Zielske · Pleasanton, US

Key dates

• Filing date: Nov 19, 1999
• Grant date: May 22, 2001
• Expiry date: Nov 19, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D295/15
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process is provided for the preparation of a compound having the structure of Formula I ##STR1## The process includes reacting a heterocyclic amine with a monoaldehyde or a dialdehyde in a pH range of from about 8 to 14 and then quaternizing the so-reacted heterocyclic amine with an alkylating agent at a pH of not less than about 2. The use of pH control substantially prevents formation of an undesirable protonated reaction intermediate.