abstract |
ABSTRACT Summary of the invention Novel heterocyclic compounds of the formula (I) wherein, R1 represents a hydrogen atom or an alkyl group, A represents an ethylene group which may be substituted by alkyl or a trimethylene group which may be substitu-ted by alkyl, X represents an oxygen or sulfur atom or the group -?-R2 or -?H-R3 in which R2 represents a hydrogen atom of an optionally substituted alkyl, an alkenyl, an alkynyl or an acyl group, and R3 represents a hydrogen atom or an alkyl group, and Z represents an optionally substituted 5 - or 6-membered heterocyclic group which contains at least two hetero atoms selec-ted from oxygen, sulfur and nitrogen atoms, or an op-tionally substituted 3- or 4-pyridyl group. The above defined novel heterocyclic compounds of formula (I) exhibit powerful insecticidal properties. |