Compounds of the general formula:
which are N-aryl-3-aryl-4,5-dihydro-1H-pyrazole-1-carboxamides and agronomically acceptable salts thereof are pesticidally, especially insecticidally active. They are provided in Insecticidal compositions together with agronomically acceptable carriers or diluents and may be applied to insects or to loci to be freed or protected to attack by insects. The compounds may be prepared from 1-substituted-4,5-dihydro-1H-pyrazoles which may also be 4-monosubstituted by deprotonation and subsequent alkylation or acylation or from beta-dicarbonyl compounds by reaction with hydrazine and formaldehyde and subsequently aryl isocyanate followed by optional treatment with base and alkylation or acylation.
通式如下的化合物
N-芳基-3-芳基-4,5-二氢-1H-
吡唑-1-甲酰胺及其农艺学上可接受的盐类化合物具有杀虫活性,特别是杀虫活性。它们与农艺学上可接受的载体或稀释剂一起组成杀虫组合物,可用于昆虫或昆虫攻击的地方。这些化合物可以由 1-取代的-4,5-二氢-1H-
吡唑制备,也可以通过去质子化和随后的烷基化或酰基化来制备 4-单取代的
吡唑,或由β-二羰基化合物制备,方法是与
肼和
甲醛反应,随后与异
氰酸芳基酯反应,然后任选用碱处理和烷基化或酰基化。