TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): Brominated compound of formula (I) is reacted with diester of formula (II) to obtain a carbon-containing compound of formula (III). The obtained compound is hydrolyzed to obtain dicarbonyl-containing compound of formula (IV). The compound (IV) is reacted with aryl halides of formulae: Ar1-X and Ar2-X to obtain dihydroxy substituted compound of formula (V). The compound (V) is reduced to obtain the tricyclic compound.X=halo.Preferred Composition: The compound (1) is chosen from formulae (2-7).R51-R54=H or group X, or R52 and R53 may combine to form alicyclic ring, monocyclic ring or polycyclic aromatic ring.The organic layer further contains arylamine type compound and/or styryl arylamine type compound, and elements chosen from group 2, 4, 5 transition metals, lanthanum series metal and d-transition metal. The tricyclic compound and a compound having electroluminescent peak in the wavelength of 560 nm or more are contained in the organic electroluminescent element. The organic layer consists of charge generating layer and electrolytic luminescence layer. A mixing zone of reducing dopant and an organic compound or mixing zone of oxidizing dopant and an organic compound is positioned in the inner side of the electrode. SPECIFIC COMPOUNDS - The tricyclic compound is chosen from 1215 disclosed compounds such as 5,10-di-naphthalen-2-yl-benzo(g)iso quinoline of formula (A), 10-biphenyl-3-yl-5-phenyl-benzo(g)isoquinoline, 10-(3,4-dimethyl-phenyl)-5-phenyl-benzo(g)isoquinoline, 5-phenyl-10-o-tolyl-benzo(g)isoquinoline and 5-phenyl-10-pyridin-2-yl-benzo(g)isoquinoline.    EXAMPLE - 3-Bromopyridine (96 mu l), diethylether (10 ml), butyl lithium and dimethylphthalate (0.17 ml) were reacted to obtain methyl 2-(pyridin-3-ylcarbonyl)benzoate. The obtained compound in tetrahydrofuran was hydrolyzed in presence of water to obtain benzo(g)isoquinoline-5,10-dione. The obtained dione was reacted with naphthalene bromide to obtain 5,10-di-naphthalen-2-yl-5,5a,6,10-tetrahydro-benzo(g)isoquinoline-5,10-diol. The diol (1 g) was reacted with potassium iodide (1.4 g), sodium dihydrogen phosphate (1.37 g) and acetic acid (40 ml). The reaction mixture was refluxed and the produced solid was filtered and washed with acetic acid, water and hexane in order, and dried to obtain 5,10-di-naphthalen-2-yl-benzo(g)isoquinoline (0.53 g) with yield of 57%. The organic electroluminescent element produced using the obtained compound had excellent color purity and improved luminous efficiency.