TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises reacting bis(3,5-dibromo)benzophenone with optionally substituted 2-lithiobiphenyl, 2-lithiodiphenylether, 2-lithiodiphenylthioether, 2-(2-lithiophenyl)-2-phenyl-1,3-dioxolane, 2-lithiophenyldiphenylamine or corresponding Grignard compounds to obtain triarylmethanol, cyclizing triarylmethanol under acid conditions and optionally further reacting with bromo groups. Preferred Components: In the organic electroluminescent device, (I) is used as: fluorescent or phosphorescent compound, preferably when one or more R and/or R1 is C(=O)Ar1, S(=O)Ar1, S(=O)2Ar1 or P(=O)Ar12; hole transport material, hole injection material, electron block material and exciton block material, when one or more groups R and/or R1 is N(Ar1)2; and/or electron transport material and/or hole block material, when Y1 is C=O, P(=O), SO or SO2, and at least a substituent R and/or R1 is a heteroaryl group (which is electro arm heterocycle) or C(=O)Ar1, P(=O)Ar12, S(=O)Ar1 or S(O)2Ar1. Preferred Definitions:    R = an aromatic or heteroaromatic ring system, preferably phenyl, 1-naphthyl, 2-naphthyl, anthracenyl, phenylanthracenyl, 1 or 2 naphthylanthracenyl, binaphthyl, pyrenyl, fluoroanthenyl, 2, 3, 4, 5, 6, or 7 benzanthracenyl, N-benimidazolyl, phenyl-N-benzimidazolyl, N-phenylbenzimidazolyl or phenyl-N-phenylbenzimidazolyl; and    X = CH.    SPECIFIC COMPOUNDS - 16 Compounds (I) are disclosed e.g. 9,9-bis-(3,5-dibromophenyl)fluorene of formula (Ia), 9,9-bis-(3,5-diphenylphenyl)fluorene, 9,9-bis-(3,5-diphenylaminophenyl)fluorene, 9,9-bis-(3,5-dicarbazole-N-yl)fluorene and 9,9-bis-(3,5-dibromo-phenyl)-9,10-dihydro-anthracene.    EXAMPLE - 2-Bromobiphenyl (144.5 g) and magnesium (15.3 g) were produced in corresponding Grignard reagent and in a mixture of tetrahydrofuran (THF, 500 ml) and dimethoxyethane (250 ml). Then, a suspension of bis-(3,5-dibromophenyl)ketone (224 g) in THF (1000 ml) was added and stirred for 12 hours. The solvent was removed in the vacuum, the residue was reacted with glacial acetic acid (1000 ml) and hydrobromide (5 ml) and stirred for 1 hour. The suspension was heated for half-an-hour under reflux and stirred for 12 hours. The solid material was removed, washed thrice with ethanol (300 ml) and recrystallized twice with toluene to obtain 9,9-bis-(3,5-dibromophenyl)fluorene (183.2 g).