TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The catalyst is organic palladium or mixture of organic palladium and organic phosphine ligand. The organic palladium is tris(dibenzylideneacetone)dipalladium, tetrakis(triphenylphos- phine)palladium and bis(triphenylphosphine)palladiumchloride. The organic phosphine ligand is tris(o-tolyl)phosphine. The first organic solvent is chosen from tetrahydrofuran, glycol dimethyl ether, benzene, chlorobenzene and toluene. The second organic solvent is propionic acid, quinoline, imidazole, butyl alcohol and N-methyl-2pyrrolidone. The third organic solvent is chosen from tetrahydrofuran, chloroform, methylene dichloride and N,N-dimethyl fomamide. Preferred Process: The naphthalene substituted compound (C) preparing method further involves obtaining naphthalene substituted compound (D), carrying out condensation reaction on compound (D) and 2,6-dibromo-1,4,5,8-naphthalic dianhydride in presence of second organic solvent at a mol ratio of 2-15:1 at 30-100 degrees C, and obtaining the naphthalene substituted compound (C). The naphthalene substituted compound (A) preparation method involves obtaining naphthalene substituted compound (A), mixing the compound (A1) with alkyl derivant of lithium in presence of third organic solvent in light-shielding environment, adding trimethyltin chloride and obtaining the compound (A). The compound B preparation method involves carrying out bromination on the compound (A1) and brominating agent at mol ratio of 1:2-3 in presence of fourth organic solvent in light-shielding environment and obtaining the compound (B). The fourth organic solvent is chosen from tetrahydrofuran, chloroform, methylene dichloride and N,N-dimethyl fomamide. Preferred Property: The mol ratio of the compounds (A) to (B) to (C) is m:p:q. The Stille coupling reaction temperature is 60-130 degrees C. The Stille coupling reaction time is 24-72 hours. The reaction temperature of the compound A1 and N-bromosuccinimide is 0-50 degrees C. The reaction time of the compound A1 and N-bromosuccinimide is 0.5 to 48 hours. The reaction temperature of the compound A1 and trimethyltin chloride is -78-30 degrees C. The reaction time of the compound A1 and trimethyltin chloride is 2-48 hours. The mol ratio of the compound A1 to alkyl derivative of lithium to trimethyltin chloride is 1:2-4:2-2:4. The alkyl derivative of lithium is n-butyl-lithium and/or tertbutyl lithium.