Patent · US Active

Process for manufacturing 5-chloromethyl-2,3-pyridine dicarboxylic acid anhydrides

US8722893B2 · kind B2 · utility

1Cited by

6References

2Claims

0Family size

Assignee

BASF SE

Inventors

Frederik Menges · Schriesheim, DE
Joachim Gebhardt · Monsheim, DE
Michael Rack · Eppelheim, DE
Michael Keil · Freinsheim, DE
Rodney F. Klima · Morrow, US
David A. Cortes · Fairless Hills, US
Robert Leicht · Hannibal, US
Helmut Zech · Bad Dürkheim, DE
Jochen Schroeder · Lambsheim, DE

Key dates

Filing date	Nov 3, 2009
Grant date	May 13, 2014
Priority date	—
Expiry date	Nov 3, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D405/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for manufacturing 5-chloromethyl-2,3-pyridine dicarboxylic acid anhydrides (I) Compounds (I) are useful intermediates in the synthesis of herbicidal imidazolinones.

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