Process for the preparation of guanidinium salts

US7439395B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Nikolai (Mykola) Ignatyev · Duisburg, DE
• Urs Welz-Biermann · Mannheim, DE
• German Bissky · Hamm, DE
• Helge Willner · Neheim, DE

Key dates

• Filing date: Jan 17, 2005
• Grant date: Oct 21, 2008
• Expiry date: Apr 6, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/28
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a two-step process for the preparation of guanidinium salts of the formula (1), where the substituents R have a meaning indicated in Claim, and A− is a sulfonate, alkyl- or arylsulfate, hydrogensulfate, imide, methanide, carboxylate, phosphate, phosphinate, phosphonate, borate, thiocyanate, perchlorate, fluorosilicate or nitrate, and to intermediate compounds from this process.