| 摘要 |
<p>Triazole derivs. of formula (I): (where R1 is H, 1-3C alkyl or 1-3C alkoxy and R2 is 1-6C alkyl or 3-4C alkenyl opt. substd. by CN, halogen, NO2, 1-3C alkoxy or 1-3C alkylthio, or is 3-8C cycloalkyl or cycloalkenyl opt. substd. by 1-3C alkyl), e.g. 1-/1-(N-n-propylcarbamoyloxy)-2,2,2-trichloroethyl/-1,2,4-triazol- e, are new cpds. which may be prepd. by reacting 1-(1-hydroxy-2,2,2-trichloroethyl)-1,2,4-triazole (II) with Hal-CO-NR1R2 (III) (where Hal is halogen) in the presence of an acid-binding agent or (to give (I; R1 = H)) with R2NCO (IV). Some cpds. (I) are active against phytopathogenic bacteria on various crop plants and others are selective herbicides. However, (I) are particularly useful as systemic fungicides.</p> |
