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

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

2007-07-10

2007-07-10

Davis, Zinna N. (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S315000

Reexamination Certificate

active

10494296

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.

REFERENCES:
patent: 2186773 (1940-01-01), Stuart
patent: 5330995 (1994-07-01), Eicken et al.
patent: WO 00/39111 (2000-07-01), None
XP002189278, J.Med. Chem. 1998 41, 42288-4300, Augeri et al.

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