TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (claimed): Compound (I) is obtained by adding zinc powder to tetrahydrofuran and titanium tetrachloride, refluxing under protection of argon, dissolving 4,4'-dibromo benzophenone solution and pyridine, refluxing, adjusting the solution to alkaline, extracting organic layer, drying crude product, purifying, separating to obtain white solid substance (A), adding palladium acetate, sodium tert-butoxide, tri-butyl phosphate and toluene under protection of argon, heating, adding saturated ammonium chloride solution, extracting organic layer, drying crude product, purifying, and separating to obtain brown oil substance (B), adding 4,4 ', 4-bromostyrene, sodium tert-butoxide, palladium acetate and toluene, dissolving by stirring, adding tri-butyl phosphate, heating, adding saturated ammonium chloride solution, extracting organic layer, drying the crude product, purifying and separating to obtain yellow solid substance, and recrystallizing. The substance (A) comprises iodine anisole, o-iodine anisole and o-anisidine. The substance (B) comprises 4,4'-dimethoxy-diphenylamine, 2,4'-dimethoxy-diphenylamine, 3,4'-dimethoxy-diphenylamine, 2,3'-dimethoxy-diphenylamine, 3,3'-dimethyl-diphenylamine or 2'2- dimethoxy aniline. Preferred Composition: The zinc powder is dissolved in 10 mL tetrahydrofuran. The amount of toluene added is 5 mL. The product is separated in chromatography using petroleum ether, ethyl acetate, dichloromethane or tetrahydrofuran. The volume ratio of petroleum ether, ethyl acetate is 9:1. The volume ratio of petroleum ether, dichloromethane and ethyl acetate is 6:1:0.5. Preferred Conditions: Refluxing is carried out at 85 degrees C for 2.5 hours. The refluxed mixture cooled to -10 degrees C, preferably to room temperature. The organic layer is dried over anhydrous magnesium sulfate, purified and separated using silica gel column chromatography. The zinc powder is placed at -10 degrees C. The substance (A) mixed with palladium acetate, sodium tert-butoxide, tri-butyl phosphate and toluene is heated at 100 degrees C for 12-23 hours. Reaction is carried out at 110-130 degrees C for 12-27 hours. SPECIFIC COMPOUNDS - 6 Compounds (I) are specifically claimed, e.g. 4-methyl-N-(4-methylphenyl)-N-(4-(1,2,2-tris((4-(bis(4-methylphenyl)amino)phenyl))ethenyl)phenyl)aniline of formula (Ia), 2-methyl-N-(4-methylphenyl)-N-(4-(1,2,2-tris((4-((2-methylphenyl)(4-methylphenyl)amino)phenyl))ethenyl)phenyl)aniline, 3-methyl-N-(4-methylphenyl)-N-(4-(1,2,2-tris((4-((3-methylphenyl)(4-methylphenyl)amino)phenyl))ethenyl)phenyl)aniline, 3-methyl-N-(2-methylphenyl)-N-(4-(1,2,2-tris((4-((2-methylphenyl)(3-methylphenyl)amino)phenyl))ethenyl)phenyl)aniline and 3-methyl-N-(3-methylphenyl)-N-(4-(1,2,2-tris((4-(bis(3-methylphenyl)amino)phenyl))ethenyl)phenyl)aniline.