Certain organic compounds derived from urea or thiourea having insectical activity and methods of their preparation are disclosed. The compounds according to the invention have been found to interfere with the mechanism of metamorphoses which occurs in insects. Hence the substances according to the invention are specifically active against insects. Owing to this specificity and because of the absence of phytotoxicity effects, the compounds of this invention are of prime importance.
本发明揭示了从
尿素或
硫脲衍生的某些有杀虫活性的有机化合物及其制备方法。根据本发明的化合物已被发现干扰昆虫中发生的变态机制,因此本发明的物质对昆虫具有特异性活性。由于这种特异性和无植物毒性影响,本发明的化合物具有重要意义。