| abstract |
NEW MATERIAL:The compound of formula I [R 1 is halogen, lower alkyl, lower alkoxy, amino, etc.; X is O or S; A is group of formula II (r 3 and r 4 are H, halogen, lower alkyl, etc.), -O-, formula III (k is 0W2) or formula IV (r 5 is H or lower alkyl); B, D=A; n, m and l are 0 or 1; when A is group of formula II, m is 1 and A=B or B=D≠O or S; R 2 is group of formula V (r 15 is H, lower alkyl, etc.; Z is O, S, phenyl, etc.), etc.]. n EXAMPLE: 3-(2,6-Dichlorophenyl)-5-(4-isopropoxybenzyl)-1,2,4-oxadiazole. n USE: A miticide. It exhibits excellent ovicidal, larvicidal and nymphicidal activities against ovum, larva and nymph of plant-parasitic spider mites such as Tetranychus desertorum and has low toxicity and high safety to warm-blooded animals. n PREPARATION: A compound of formula I wherein A is A' can be produced by heating and cyclizing a compound of formula IV (A' is group of formula II). n COPYRIGHT: (C)1989,JPO&Japio |