| 摘要 |
There are provided novel nitroalkenes of the formula (I) …<IMAGE>… in which… R<1> represents a five- or six-membered heterocyclic group which contains 1, 2, 3 or 4 nitrogen atoms and/or one or two oxygen or sulphur atoms as hetero atom ring members, the number of hetero atoms being 1, 2, 3 or 4,… R<2> represents hydrogen or alkyl,… R<3> and R<4> have the meaning given in the text of the application,… and… X represents oxygen, sulphur or the N-R<5> group, where R<5> has the meaning given in the text of the application. …<??>The novel compounds have a highly pronounced insecticidal activity and can be used in pesticides. |
