Patent · US Expired

Method for producing substituted pyridine-carboxylic acids

US6346623B1 · kind B1 · utility

1Cited by

0References

7Claims

0Family size

Assignee

DSM Fine Chemicals Austria NFG GmbH & Co KG · AT

Inventors

Gerhard Steinbauer · Ansfelden, AT
Curt Zimmermann · Ansfelden, AT
Ernst Wressnegger · Linz, AT
Erich Steinwender · Linz, AT

Key dates

Filing date	Nov 30, 2000
Grant date	Feb 12, 2002
Priority date	—
Expiry date	Nov 30, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D213/80
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

An improved process for the preparation of substituted pyridinecarboxylic acids (II), useful as herbicide intermediates, by ozonolysis of quinolines (I).

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