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US 6,441,171 B1Granted
Method for the production of 4,6-dichloropyrimidine with the aid of phosgene
AssigneeBayer Aktiengesellschaft
InventorsFranz-Josef Mais, Günther Cramm, Alexander Klausener, Guido Steffan
Life of this patent
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Abstract
The invention relates to a method for the preparation of 4,6-dichloropyrimidine by reacting 4-chloro-6-methoxypyrimidine with phosgene as chlorinating agent in the presence of a nitrogen-containing auxiliary.
Claims8
A method for the preparation of 4,6-dichloropyrimidine comprising reacting 4-chloro-6-methoxypyrimidine with phosgene as chlorinating agent in the presence of a nitrogen-containing auxiliary.
Dependencies are inferred from the claim text.