Pyrazole benzophenone compound as well as preparation method and application thereof

The invention belongs to the technical field of chemical synthesis and blue-green algae growth inhibition, and particularly relates to a pyrazol benzophenone compound as well as a preparation method and application thereof. The structure of the pyrazol benzophenone compound is shown as a formula I; wherein R1 is selected from one of hydrogen, halogen and C1-C4 alkyl; and R2 is selected from fluorine or bromine. The pyrazol benzophenone compound provided by the invention is a novel compound and has a good inhibition effect on the growth of blue-green algae, EC50 is 0.61-2.01 mu M, and a novel means can be provided for the treatment of the blue-green algae. 本发明属于化学合成及蓝藻生长抑制技术领域，具体涉及一种吡唑苯甲酮类化合物及其制备方法和应用。该吡唑苯甲酮类化合物的结构如式I所示；其中，R1选自氢、卤素和C1-C4烷基中的一种；R2选自氟或溴。本发明提出的吡唑苯甲酮类化合物是一种新化合物，其针对蓝藻生长具有良好的抑制作用，EC50为0.61μM～2.01μM，能够为蓝藻的治理提供一种新手段。