| 摘要 |
<p>4-Amino-1,2,4-triazol-5-ones of the formula (I) …<IMAGE>… in which… R represents alkyl,… are prepared by reacting acyl hydrazides of the formula (II) …<IMAGE>… in which… R represents alkyl,… with phosgene, if desired in the presence of a base, and if desired in the presence of a diluent to give the oxadiazolinones of the formula (III) …<IMAGE>… in which… R represents alkyl,… and reacting these compounds of the formula (III) with hydrazine hydrate, if desired in the presence of a diluent.</p> |
