Patent · US Expired

Method for producing 2-halogen-pyridine-carboxylic acid amides

US7241896B2 · kind B2 · utility

1Cited by

2References

10Claims

0Family size

Assignee

BASF SE

Inventors

Horst Mayer · Ludwigshafen, DE
Dieter Golsch · Mannheim, DE
Heinz Isak · Haßloch, DE
Jochen Schröder · Lambsheim, DE

Key dates

Filing date	Oct 31, 2002
Grant date	Jul 10, 2007
Priority date	—
Expiry date	Jan 20, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D213/82
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing 2-halopyridinecarboxamides of primary aromatic monoamines I which have a substituent other than hydrogen in the ortho-position to the amino group by reaction of 2-halopyridinecarbonyl chloride II with the aromatic monoamine I, which comprises carrying out the reaction in a solvent mixture comprising water and at least one water-immiscible organic solvent in the presence of none or less than 10 mol %, based on the 2-halopyridinecarbonyl chloride II, of a base other than I or II.

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