Novel urea derivatives are provided which are of the formula
wherein R1 is alkenyl or alkynyl; R2 is alkenyl, alkynyl, cycloalkyl or phenyl(C1-C8)alkyl; R3 is hydrogen; R4 is alkyl, alkoxycarbonylalkyl or cycloalkyl; or R2 and R3 are joined to form a dimethyleneoxy group; or R3 and R4 are joined and form, together with the attached nitrogen atom, a 5- to 7-membered heterocyclic ring.
The novel urea derivatives find use as arthropod repellents either when used alone or in conjunction with an inert carrier.
所提供的新型
脲衍
生物具有以下式子 其中 R1 是烯基或炔基;R2 是烯基、炔基、环烷基或苯基(C1-C8)烷基;R3 是氢;R4 是烷基、烷氧羰基烷基或环烷基;或 R2 和 R3 连接形成二亚甲基氧基;或 R3 和 R4 连接并与所附的氮原子一起形成 5 至 7 元杂环。 新型
脲衍
生物可单独使用或与惰性载体一起使用,用作节肢动物驱避剂。