Synthesis and Herbicidal Activity of Substitued Phenzoxy1,2,4-Triazolo Pyrimidine Derivatives

Seventeen novel substitued phenzoxy 1,2,4-triazolo pyrimidine derivatives have been designed and synthesized using sulfone substituted 1,2,4-triazolo pyrimidine as starting material.All synthesized compounds were confirmed by elemental analysis,MS and 1H NMR.Preliminary bioassay indicates that some of them display good herbicidal activities at concentration of 100 mg/L.Five compounds exhibited good herbicidal activities and continuousness under dosage of 150 g/hm2.