TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Compounds: Reductive reaction is carried out using a reducing agent chosen from hydrazine, lithium-aluminum hydride, sodium borohydride, and aluminum chloride.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The acyl chloride compound is chlorinated methanoyl, chlorinated butyryl, valeroyl chloride, chlorinated hexanoyl, chlorinated 2-ethylhexanoyl, chlorinated nonynoyl, chlorinated heptanoyl, chlorinated octanoyl, chlorinated decanoyl, chlorinated dodecanoyl, and/or chlorinated tetradecanoyl. Preferred Method: Dithieno-benzodithiophene is obtained by manufacturing 1,4-di(3-halothienyl)-2,5-dihalobenzene in the presence of a palladium catalyst with 3-halothiophene-2-zinc derivative and 1,2,4,5-tetrahalobenzene, and carrying out intramolecular cyclization of obtained compound in the presence of an alkali sulfide metal salt. 3-Halothiophene-2-zinc derivative is obtained using Grignard reagent of 2,3-dibromothiophene. SPECIFIC COMPOUNDS - 11 Specifically claimed compounds (I) e.g. dimethyl dithieno-benzodithiophene of formula (IA), di-n-butyl dithieno-benzodithiophene, di-n-pentyl dithieno-benzodithiophene, di-n-hexyl dithieno-benzodithiophene, and di-2-ethylhexyl dithieno-benzodithiophene, are manufactured.    EXAMPLE - (In mg) dithieno-benzodithiophene (86.8) and dichloromethane (14 ml) were ice-cooled, and aluminum chloride (134) and chlorinated hexanoyl (115) were added. The mixture was stirred for 30 hours at room temperature, water was added, and reaction was stopped. Toluene was added and the obtained slurry was phase-separated. The organic phase was concentrated after water-washing. The obtained residue was washed and dried to obtain di-n-hexanoyl dithieno-benzodithiophene (99.8) as yellow solid with a yield of 70%. The obtained compound (97), potassium hydroxide (223), diethylene glycol (12 ml), and hydrazine monohydrate (412) were added and stirred at 220 degrees C for 30 hours after stirring at 120 degrees C for 1 hour. The organic phase was separated, water-washed, dried, and concentrated. The obtained residue was purified using hexane and recrystallized thrice using hexane, to obtain di-n-hexyldithieno-benzodithiophene (35) with a yield of 38%. The obtained compound had a melting point of 190.2-190.4 degrees C.