Method for the production of compounds with quaternary sp2-hybridised nitrogen atoms

US8252943B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Laszlo Szarvas · Ludwigshafen, DE
• Matthias Maase · Speyer, DE
• Klemens Massonne · Bad Dürkheim, DE

Key dates

• Filing date: Mar 3, 2005
• Grant date: Aug 28, 2012
• Expiry date: Sep 11, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D233/54
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for preparing ionic compounds comprising cations containing quaternary sp2-hybridized nitrogen atoms, which comprises reacting compounds containing a double-bonded nitrogen atom with a dialkyl sulfate with participation of both alkyl groups of the dialkyl sulfate and, if appropriate, subjecting the resulting ionic compound containing sulfate anions to an anion exchange.