Process for the preparation of 2-chloro-5-chloromethyl-thiazole

US8013167B1 · kind B1 · utility

Assignee

• Syngenta Crop Protection AG · CH

Inventors

• Anthony Cornelius O'Sullivan · Basel, CH
• Laurenz Gsell · Basel, CH
• Rudolf Naef · Lupsingen, CH
• Marcel Senn · Basel, CH
• Thomas Pitterna · Chur, CH
• David John Wadsworth · Bättwil, CH

Key dates

• Filing date: Dec 12, 1996
• Grant date: Sep 6, 2011
• Expiry date: Jul 19, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C333/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of 2-chloro-5-chloromethyl-thiazole, which is employed as intermediate in the preparation of compounds having a pesticidal action, which process comprises reacting a compound of formula (II), in free form or in salt form, (III), (IV), (V) or (VI) with a chlorinating agent, where R and M+ are as defined in claim 1; to the compounds of the formulae (III) and (IV), which are used in this process as intermediates; and to the use of, and a process for the preparation of, the compounds of formulae (III) and (IV).