- Preparation of ponazuril and toltrazuril
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The invention relates to preparation of ponazuril and toltrazuril, in particular to a reaction of 1-(4-halogenated-3-methylphenyl)-3-methyl-1,3,5-triazine-2,4,6-trione and p-substituted phenol in thepresence of a copper catalyst/alkali/additive/solvent. The process is simple to operate and has an industrial large-scale production prospect.
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Paragraph 0017; 0019
(2020/06/09)
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