Method for preparing Tebucomazole in high purity

A process for preparing high-purity pentazolol features the reaction between 1-(4-chlorphenylethyl)-1-tert-butyl-1, 2-epoxy ethane and 1,2,4-triazole in organic polar solvent under existence of alkali while adding catalyst chosen from N,N-dimethyl-4-aminopyridine, N,N-dimethylphenylamine, methylphrr...

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1. Verfasser: AIXI,WANG HU
Format: Patent
Sprache:eng
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Zusammenfassung:A process for preparing high-purity pentazolol features the reaction between 1-(4-chlorphenylethyl)-1-tert-butyl-1, 2-epoxy ethane and 1,2,4-triazole in organic polar solvent under existence of alkali while adding catalyst chosen from N,N-dimethyl-4-aminopyridine, N,N-dimethylphenylamine, methylphrrolidone, dimethyl formamide, methanol sodium, ethanol sodium, potassium hydroxide and sodium hydroxide. Its advantages are high output rate and high purity.