Patent · US Active

Method for preparing 4-aminobut-2-enolides

US9550745B2 · kind B2 · utility

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5Claims

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Assignee

BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

Norbert Lui · Odenthal, DE
Jens-Dietmar Heinrich · Burscheid, DE

Key dates

Filing date	Aug 22, 2012
Grant date	Jan 24, 2017
Priority date	—
Expiry date	Jun 18, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D307/68
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Process for preparing 2,2-difluoroethylamine derivatives, wherein compounds of the general formula (IV) are reduced to the corresponding 2,2-difluoroethylamine derivatives of the general formula (III), where the A radical is as defined in the description:

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