Patent · US Active

Process for the preparation of 4-aminobut-2-enolides

US8314242B2 · kind B2 · utility

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1References

11Claims

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Assignee

BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

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

Key dates

Filing date	Aug 17, 2010
Grant date	Nov 20, 2012
Priority date	—
Expiry date	Aug 17, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D307/66
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Process for the preparation of 4-aminobut-2-enolide compounds of the formula (I):comprising reaction of a 4-(methylamino)furan-2(5H)-one compound of the formula (II)with an amine of the formula (III)in which R1 and A have the definitions mentioned in the description, optionally in the presence of a Brønstedt acid.

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