Syngenta Crop Protection, Inc.

Birgit Zw&ouml;lfer

Christian Burger

Johann Altreiter

Sylvia Krich

A process for the preparation of 2-chloro-5-chloromethyl-1,3-thiazole, in which allyl isothiocyanate of formula CH &boxH;CH&mdash;CH &mdash;NCS is reacted at from &minus;40&deg; C. to &plus;30&deg; C., in a solvent that is inert under the reaction conditions, with from 1 to 2 mol of a chlorinating agent per mol of allyl isothiocyanate; to the reaction mixture so obtained there is added, at a reaction temperature of from 0&deg; C. to the boiling temperature of the solvent used, from 1 to 5 mol of oxidising agent per mol of allyl isothiocyanate, and then 2-chloro-5-chloromethyl-1,3-thiazole is isolated from the reaction mixture and is optionally converted by crystallisation into high-purity 2-chloro-5-chloromethyl-1,3-thiazole.

Growing community of inventors

Timelkam, Austria

Birgit Zwölfer

Growing community of inventors

Timelkam, Austria

Birgit Zw&ouml;lfer

Birgit Zwölfer