| 摘要 |
Title compds. (I; R = C1-4 halogenoalkyl; R1 = H, halogen, halogenoalkyl; X = O or S; n = 1 or 2) useful as insecticides, were manufd. by reaction of phenylisocyanate of II and 2-chloro-6-fluoro-benzamide. Thus, suspension of 50ml anhydrous toluene and 5.02g 2-chloro-6-fluoro-benzamide was refluxed with 4-trifluoro-methoxy-phenylisocyanate for 5hr and crystalized with toluene to give N-[2-chloro-5-(2-chloro-1,1,2-trifluoroethoxy) -phenyl-N-(2-chloro-6-fluorobenzoyl)-urea.
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