Synthesis method of flumioxazin

The invention provides a synthesis method of flumioxazin, and belongs to the field of pesticide synthesis. According to the invention, the method solves the problems of many steps, low yield and the like in the existing flumioxazin synthesis process, has the following synthetic route defined in the specification, and has high yield. 本发明提供了一种丙炔氟草胺的合成方法，属于农药合成领域。解决了现有合成丙炔氟草胺的工艺步骤多，收率不高等问题。一种丙炔氟草胺的合成方法，合成路线如下：本发明收率高。