Process for preparing 2,2-difluoroethylamine derivatives by alkylating 2,2-difluoroethylamine

US9376389B2 · kind B2 · utility

Assignee

• BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

• Christian Funke · Leichlingen, DE
• Norbert Lui · Odenthal, DE
• Rafael Warsitz · Essen, DE
• Albert Schnatterer · Leverkusen, DE

Key dates

• Filing date: Jun 24, 2013
• Grant date: Jun 28, 2016
• Expiry date: Jun 24, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/61
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for preparing a 2,2-difluoroethylamine of the formula (III) in which 2,2-difluoroethylamine of the formula (I) is reacted with a halide of the formula (II) in the presence of a tertiary nitrogen base:where, in the formulae (II) and (III), Hal and A are defined as stated in the description.