为了寻找新的高活性农药,利用工业易得的三氟羧草醚及其中间体为起始原料,设计合成了9个未见报道的-N-取代苯甲酰基-N-取代芳基硫脲化合物,结构经IR,^1HNMR,元素分析确认.X射线衍射测定了化合物4b的晶体结构,结果表明:其分子属于三斜晶系,空间群p-1,a=0.51588(19)nm,b=1.0766(4)nm,c=2.0596(8)nm,a=81.113(6)°,β=89.702(6)°,γ=78.131(6)°,V=1.1056(7)nm^3,Dc=1.445Mg/m^3,Z=2,F(000)=492,μ=0.319mm^-1.初步生物活性测试结果表明,部分化合物具有较好的除草活性.
In order to find high active pesticide, nine novel compounds of N-substituted benzoyl-N'-substituted arylthiourea were synthesized starting from industrial acifluorfen and its intermediate. Their structures were characterized by IR, 1H NMR spectra and elemental analysis. The single crystal structure of compound 4b was determined by X-ray diffraction analysis. The crystal belongs to triclinic with space group P-1, a=0.51588(19) nm, b= 1.0766(4) nm, c=2.0596(8) nm, α=81.113(6)°, β=89.702(6)°, γ=78.131(6)°, V= 1.1056(7) nm^3, Dc= 1.445 Mg/m^3, Z=2, F(000) =492,/z = 0.319 mm-1. The preliminary biological tests showed that some of these title compounds have herbicidal activities.