2,4,6-trihalopyrimidine-5-carboxylic acid halides and...

Details 2,4,6-trihalopyrimidine-5-carboxylic acid halides and... 2,4,6-trihalopyrimidine-5-carboxylic acid halides and...

C - Chemistry, Metallurgy

07

D

260/251

C07D 239/30 (2006.01)

Patent

CA 1117943

HOE 79/F 201 2,4,6-TRIHALOPYRIMIDINE-5-CARBOXYLIC ACID HALIDES AND PROCESS FOR THEIR PREPARATION Abstract of the disclosure: 2,4,6-Trihalopyrimidine-5-carboxylic acid halides are prepared by reaction of 2,4,6-trihalopyrimidine-5- aldehydes with chlorine and/or at least one chlorinating agent (sulfuryl chloride etc.), optionally in the presence of a free radical-forming agent, at temperatures of from about 20 to 150°C, in an inert organic solvent, and op- tionally rehalogenation of the 2,4,6-trihalopyrimidine-5- carboxylic acid chlorides formed with usual fluorinating or brominating agents. The products are intermediates especially in the field of dyestuffs.

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