TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): A coupling reaction of anthracene compound of formula (II) and 9H-carbazole derivative of formula (III) is carried out in presence of metal catalyst e.g. palladium catalyst, copper iodide and copper, to obtain the anthracene derivative (Ia).M=Ar3;Ar4=Ar1;andR1,R2=H, 1-4C alkyl, 6-25C aryl, halo or 1-4C haloalkyl. SPECIFIC COMPOUNDS - 123 anthracene derivatives are disclosed e.g. 2-(4-(N-(4-diphenyl aminophenyl)-N-phenylamino)phenyl)-9,10-diphenyl anthracene of formula (IV), 2-(4-(N-phenyl N-(9-phenyl-carbazol-3-yl)amino)phenyl)-9,10-diphenyl anthracene, 2-(3-(N-(4-(carbazol-9-yl)phenyl)-N-phenylamino)phenyl)-9,10-diphenyl anthracene, 2-(4-(N-phenyl N-(9-phenyl-carbazol-3-yl)amino)phenyl)-9,10-diphenyl anthracene and 2-(3-(N-(4-(carbazol-9-yl)phenyl)-N-phenylamino)phenyl)-9,10-diphenyl anthracene.    EXAMPLE - 0.52 g 2-(4-Bromophenyl)-9,10-diphenyl anthracene, 0.30 g sodium tertbutoxide, 0.32 g N-phenyl 9-phenyl-carbazole 3-amine and 0.030 g bis(dibenzylidene acetone) palladium (0) was put into 50 mL three necked flask which was nitrogen-substituted. 0.02 ml Hexane solution (10 wt.%) was prepared by mixing 10 ml toluene and tri(tert-butyl)phosphine. The obtained mixture was heat-stirred for 5 hours, and was made to react at 80 degrees C. Toluene was added to the reaction mixture after reaction, and the suspension was suction-filtered through florisil, cerite and alumina. The obtained filtrate was washed by water and saturated salt solution. Magnesium sulfate was added to the organic layer and dried. The filtrate obtained by suction-filtration was concentrated, and solid was obtained. The solid was purified by silica gel column chromatography. The obtained fraction was concentrated and solid was obtained. The solid was recrystallized with mixed solvent of dichloromethane and methanol, to obtain pale yellow powdery solid of 0.5 g 2-(4-(N-(4-diphenyl aminophenyl)-N-phenylamino)phenyl)-9,10-diphenyl anthracene, with 61% yield.