Preliminary bioassay shows that most substituted pyrazolyl benzoxazole derivatives exhibit high herbicidal activity to the tested gramineous weeds and latifoliate weeds.

• 初步生物活性测试表明:所合成的取代吡唑基苯并恶唑衍生物大多数对禾本科杂草和阔叶杂草有很高的防效。