TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): Organic electroluminescent phenanthrene containing compound (1) is prepared by carrying out clemmensen reduction of fluorenone compound (A) to produce the compound (B). It is also prepared by carrying out clemmensen reduction of fluorenone compound (C) to produce the phenanthrene containing compound (D), carrying out bromination of compound (D) to produce brominated phenanthrene containing compound (E), and carrying out substitution to produce the substituted phenanthrene containing compound (F). Further the organic electroluminescent compound is prepared by carrying out clemmensen reduction of fluorenone compound (C) to produce the phenanthrene containing compound (D), carrying out bromination of compound (D) to produce brominated phenanthrene containing compound (G), carrying out substitution of compound (G) to produce substituted phenanthrene containing compound (H), carrying out bromination of compound (H) to produce another brominated phenanthrene containing compound (I), carrying out another substitution step of compound (I) to produce the another substituted phenanthrene containing compound (J). Preferred Component: The organic layer comprises compound(s) including arylamine compounds or styrylarylamine compounds. It comprises metal(s) including organic metals of Group 1, Group 2, 4th period and 5th period transition metals, lanthanide metals or d-transition elements. It also comprises a charge generating layer as well as an electroluminescent layer. EXAMPLE - A flask was charged with zinc (4.8 g), mercury chloride (0.48 g), distilled water (8 ml) and aqueous hydrogen chloride (HCl) solution (0.2 ml), and the mixture was stirred. Then, distilled water (3 ml), aqueous HCl solution (7 ml), toluene (7 ml) and 9H-fluoren-9-one (2 g) were added, and the resultant mixture was stirred under reflux for 24 hours. During the reaction, aqueous HCl solution (2 ml) was added every approximately 6 hours. When the reaction was completed, the reaction mixture was washed with distilled water and ethyl acetate, and dried over magnesium sulfate. After removing the solvent, the organic residue was purified via column chromatography to obtain phenanthrene containing compound (A) (1.6 g, 44%). Compound (A) (1.6 g) and N-bromosuccinimide (1.82 g) were dissolved in dichloromethane (50 ml) under nitrogen atmosphere, and the solution was stirred at 25 degrees C for 1 day. Then, the reaction was quenched by adding distilled water (100 ml), and the mixture was extracted with dichloromethane (150 ml). The extract was dried under reduced pressure, and the residue was purified by column chromatography to obtain brominated phenanthrene containing compound (B) (2 g). Compound (B) (2 g), phenylboronic acid (1.3 g), and tetrakispalladium (0) triphenylphosphine (0.6 g) were dissolved in toluene (100 ml) and ethanol (50 ml). Aqueous 2M sodium carbonate solution (50 ml) was added, and the mixture was stirred under reflux at 120 degrees C for 4 hours. Then the reaction mixture was cooled to 25 degrees C, and distilled water (200 ml) was added to quench the reaction. The mixture was extracted with ethyl acetate (150 ml), and dried under reduced pressure. Purification via column chromatography gave the target diphenyl-phenanthrene containing compound (1) (1.6 g).