1-(4-溴苯基)-3-(1H-1,2,4-三氮唑-3-基)脲的合成

Synthesis of 1-(4-bromophenyl)-3-(1H-1,2,4-triazol-3-yl)urea

以4-溴苯甲酸为原料,经过Curtius重排反应制得4-溴苯异氰酸酯,再进一步与3-氨基-1H-1,2,4-三氮唑发生亲核加成反应,合成了目标产物1-(4-溴苯基)-3-(1H-1,2,4-三氮唑-3-基)脲。对产物进行了元素分析,以红外、核磁和紫外光谱确认其结构;生测结果表明该化合物具有一定的植物生长调节活性。

1-（4-Bromophenyl）-3-（1H-1,2,4-triazol-3-yl）urea was synthesized by reaction of 4-bromophehy isocyan- ate and 3-amino-lH-1,2,4-triazole. In this reaction, a new method of Curtius rearrangement was used to synthesize 4-bromophehyl isocyanate. The structure was confirmed by IR,^1H NMR and UV. their s were evaluated in the greenhouse. Test result indicated the compound had some activity of PGR.