| 摘要 |
<p>Case 5-12585/CGC 906/= Process for producing 1H-1,2,4-triazole A process for producing 1H-1,2,4-triazole by reaction of formamide and hydrazine is described. The process comprises slowly introducing hydrazine, preferably in the form of hydrazine hydrate, into excess formamide preheated to 160-180.degree.C, the molar ratio of formamide to hydrazine being at least 2.5:1, preferably at least 4:1; and, after completion of the reaction, obtaining the formed 1H-1,2,4-triazole by distilling off the unreacted formamide. 1H-1,2,4-triazole is a valuable intermediate for producing plant protective products, particularly fungicides.</p> |
