Patent · US Active

Method for producing 2-chloroallyl thiocyanate and 2-chloroallyl isothiocyanate

US8785673B2 · kind B2 · utility

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6Claims

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Assignee

Bayer Intellectual Property GmbH · DE

Inventors

Thomas Himmler · Odenthal, DE
Matthias Decker · Recklinghausen, DE
Ralf Dunkel · San Diego, US
Peter Gerdes · Aachen, DE
Martin Littmann · Middletown, US
Norbert Lui · Odenthal, DE
Albert Schnatterer · Leverkusen, DE

Key dates

Filing date	Apr 24, 2012
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Apr 24, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C331/22
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process is described for producing 2-chloroallyl isothiocyanate from 2,3-dichloro-1-propene by reacting the 2,3-dichloro-1-propene with a thiocyanate in the presence of a phase transfer catalyst, without diluent or in the presence of up to 15 percent by weight based on 2,3-dichloropropene and simultaneously in the presence of an excess of from 10 to 200 mol percent of 2,3-dichloro-1-propene based on the thiocyanate. A process starting from 1,2,3-trichloropropane is also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.