Pyrazolinones ,pyridazinone and diazepinone derivs - - useful as pesticides

摘要

Title cpds. re of formula (I):- where A = -(CH2)n-; n = 1-3; R1 and R2 are H, Cl, Br, I, trihalomethyl, 1-4C alkyl, 1-4C alkoxy or NO2. (I) are pesticides, esp. fungicides useful in agriculture, and insecticides active against Rhizoctonia and Fusarium.