NOVELTY - Synthesizing bifenazate involves adding 4-chlorophenol to methyl tert.-butyl ether to perform nitration reaction and then stirring the reacted material at 20-45 degrees C. The stirred material is added with 63-96% nitric acid solution and then cooling and stirring the obtained material at initial temperature for 4 hours. The stirred material is monitored with gas phase chromatography and then the obtained reaction liquid is subjected to decompress distillation. The obtained material is filtered to obtain filter cake and then the filter cake is washed and dried at 40-60 degrees C.    USE - Method for synthesizing bifenazate (claimed).    ADVANTAGE - The method enables to synthesize bifenazate in cost-effective and environment-friendly manner.    DETAILED DESCRIPTION - Synthesizing bifenazate involves adding 4-chlorophenol to methyl tert.-butyl ether to perform nitration reaction and then stirring the reacted material at 20-45 degrees C. The stirred material is added with 63-96% nitric acid solution and then cooling and stirring the obtained material at initial temperature for 4 hours. The stirred material is monitored with gas phase chromatography and then the obtained reaction liquid is subjected to decompress distillation. The obtained material is filtered to obtain filter cake and then the filter cake is washed and dried at 40-60 degrees C to obtain the 2-nitro-4-chlorophenol. The obtained product is subjected to perform etherification solvent with solid alkali in organic solvent at room temperature. The obtained material is refluxed for 2 hours and then the organic solvent is removed by decompress distillation. The obtained material is filtered, washed and dried at 40-60 degrees C to obtain 2-nitro-4-chloro-anisole and then the obtained product is added with catalyst and reducing agent. The obtained material is stirred and heated to refluxed for 0.5-2 hours and then the stirred material is dried to obtain 5-chloro-2-methoxyaniline. The obtained product is stirred with 5 moles per liter hydrochloric acid at -5 degrees C and then the stirred material is added with 30% sodium nitrite solution. The obtained material is stirred for 30 minutes to obtain diazonium salt solution. The obtained solution is added with water and then the obtained material is heated at 85 degrees C. The heated material is filtered, cooled and stirred for 30 minutes and then the filtered material is washed with 10% hydrochloric acid solution. The washed material is dried to obtain 5-chloro-2-methoxybenzene hydrochloride and then the obtained product is stirred with isopropyl chloroformate for 5 hours. The stirred material is added with 1 mole per liter hydrochloric acid to control pH value 7 and then the obtained material is separated to obtain organic phase, distilled solvent and crude product. the crude product is dissolved in toluene for recrystallization to obtain 2-(5-chloro-2-methoxy-phenyl)isopropyl hydrazinium. The obtained product is subjected to perform Suzuki coupling reaction after adding boric acid, solvent, tri-isobutyl phosphate and palladium catalyst. The obtained material is stirred for 7 hours and then the stirred material is cooled, filtered and dried to obtain the desired product.