| 摘要 |
Oxopropionitrile derivs. of formula (I) are new, (where R1 = H, halo, 1-6C alkyl, 3-6C cycloalkyl, thienyl, pyridyl or aromatic hydrocarbyl substd. by one or more independently chosen halo, 1-4C alkyl, 1-4C alkoxy 1-4C alkylthio, trifluoromethyl, nitro or cyano groups; R2 = H, halo, 1-6C alkyl, 3-6C cycloalkyl, thienyl, pyridyl, phenyl or aromatic hydrocarbyl substd. by one or more independently chosen halo, 1-4C alkyl, 1-4C alkoxy, 1-4C alkylthio, trifluoromethyl, nitro or cyano groups and R3 = aromatic hydrocarbyl opt. substd. by one or more independently chosen halo, 1-4C alkyl, 1-4C halo alkyl, 1-4C alkoxy, trifluoromethyl, nitro or cyano groups). The cpds. are usually used at concentrations of 0.005-5.0%, pref. 0.01-0.5%. |
