TECHNOLOGY FOCUS - ELECTRONICS - Preferred Element: The organic thin film layer has hole transport bands comprising hole transport layer and/or positive hole injection layer containing the aromatic amine derivative. The layer touching the anode contains an acceptor material. The electroluminescent element carries out blue light emission.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): A benzene compound e.g. dibenzofuran-4-boronic acid is reacted with a halide in presence of aqueous solution of alkaline compound and acetamide to obtain an intermediate (X). Carbazole compound and a halo benzene are reacted in presence of a catalyst to obtain an intermediate (Y). The intermediates (X, Y) are reacted at 0-150 degrees C in presence of palladium catalyst to obtain the aromatic amine derivative of formula (5). Preferred Compounds: The light emitting layer further contains styryl amine compound and/or arylamine compound. Preferred Definitions:    L1,L4-L12=phenylene, naphthylene, biphenylene, terphenylene, fluorenylene or 9,9-dimethylfluorenylene;    L2=bivalent group of formula (4), when X is -N(Ar1)-, preferably phenylene, naphthylene, biphenylene, terphenylene, fluorenylene or 9,9-dimethylfluorenylene;    L3=bivalent group of formula (4), preferably phenylene, naphthylene, biphenylene, terphenylene, fluorenylene or 9,9-dimethylfluorenylene;    R7,R8=group (A);    or R7+R8=optionally saturated ring;    g,h=0-4;and    Ar2-Ar25=phenyl, naphthyl, biphenyl, terphenyl or fluorenyl.    SPECIFIC COMPOUNDS - 53 Aromatic amine derivatives are disclosed, e.g. 9-(4,4"-bis-dibenzofuran-4-yl-(1,1';3',1")terphenyl-5'-yl)-9H-carbazole of formula (A), 9-(4-(3,5-bis(4-(8-oxatricyclo(7.4.0.02,7)trideca-1(9),2(7),3,5,10,12-hexaen-6-yl)phenyl)phenyl)phenyl)-9H-carbazole, 9-(4-(3-(4-(8-oxatricyclo(7.4.0.02,7)trideca-1(9),2(7),3,5,10,12-hexaen-6-yl)phenyl)-5-(4-(4-phenylphenyl)phenyl)phenyl)phenyl)-9H-carbazole, 9-(3-(4-(8-oxatricyclo(7.4.0.02,7)trideca-1(9),2(7),3,5,10,12-hexaen-6-yl)phenyl)-5-(4-(4-phenylphenyl)phenyl)phenyl)-9H-carbazole and 9-(4-(3-(4-(8-oxatricyclo(7.4.0.02,7)trideca-1(9),2(7),3,5,10,12-hexaen-4-yl)phenyl)-5-(4-(8-oxatricyclo(7.4.0.02,7)trideca-1(9),2(7),3,5,10,12-hexaen-6-yl)phenyl)phenyl)phenyl)-9H-carbazole.    EXAMPLE - (In g) 4-iodo bromobenzene (28.3), carbazole (16.7), copper iodide (0.2), 1,4-dioxane (300 ml), trans-1,2-cyclohexane diamine (42.4) and tripotassium phosphate were reacted to obtain an intermediate (A) (18.3) with yield of 57%. Dibenzofuran-4-boronic acid (22.3), 4-iodobromobenzene (28.3), mixture of toluene (300 ml) and sodium carbonate aqueous solution (150 ml) and tetrakis(triphenylphosphine)palladium (2.31) were heat-refluxed to obtain an intermediate (23.1). The obtained intermediate (678), 1-acetamide (185), potassium carbonate (544) and copper powder (12.5) were reacted. The reaction mixture was cooled and toluene was added. The reaction mixture was filtered, dissolved in chloroform and acetone was added to deposit crystals (181). Crystals were suspended in ethylene glycol and reacted with potassium hydroxide aqueous solution (210). Subsequently, the reaction liquid was added to water and the deposited crystals were filtered, washed with methanol and water and separated to obtain white powder (151) as intermediate (B). The intermediate (A) (5), intermediate (B) (3.2), t-butoxy sodium (1.3), tris(dibenzylidene acetone)dipalladium (46 mg) and tri-t-butylphosphine (21 mg) were reacted at 80 degrees C for 8 hours. Water was added to the reaction mixture and cerite filtration was carried out. The filtrate was extracted with toluene and dried to obtain 9-(4,4"-bis-dibenzofuran-4-yl-(1,1';3',1")terphenyl-5'-yl)-9H-carbazole (4.4). The organic electroluminescent element produced using the obtained compound as hole transport material had high luminous efficiency and improved lifetime.