TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises: (a) synthesizing the fluoro indeno base compound and/or the corresponding heterocyclic derivatives, which carry hydrogen instead of Y1; (b) halogenating, so that an indeno-fluorene and/or a corresponding heterocyclic derivative originates, which is substituted by halo instead of Y1; and reacting the halogenated indeno-fluorene with a diarylamine or metallizing and reacting with an electrophile. Preferred Definitions:    W1 = CH;    R2 = methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, 2-methylbutyl, n-pentyl, sec-pentyl, tert-pentyl, 2-pentyl, cyclopentyl, n-hexyl, sec-hexyl, tert-hexyl, 2-hexyl, 3-hexyl, cyclohexyl, 2-methylpentyl, n-heptyl, 2-heptyl, 3-heptyl, 4-heptyl, cycloheptyl, 1-methylcyclohexyl, n-octyl, 2-ethylhexyl, cyclooctyl, 1-bicyclo(2,2,2)octyl, 2-bicyclo(2,2,2)octyl, 2-(2,6-dimethyl)octyl or 3-(3,7-dimethyl)octal;    Ar1 = benzene, ortho-, meta- or para-biphenyl, naphthalene, anthracene, phenanthrene, pyridine, pyrene, thiophene, triphenylamine, diphenyl-1-naphthylamine, diphenyl-2-naphthylamine, phenyl-di(1-naphthyl)amine or phenyl-di(2-naphthyl)amine; and    Y1 = N (preferred), C=O, S=O, P or P=O.    Provided that Y1 and/or X is nitrogen.    SPECIFIC COMPOUNDS - 244 Compounds (I) are disclosed e.g. 4,6,6,12,12-pentamethyl-N2,N2,N8,N8-tetraphenyl-6,12-dihydroindeno(1,2-b)fluorene-2,8-diamine of formula (Ia), 5,6,6,12,12-pentamethyl-N2,N2,N8,N8-tetraphenyl-6,12-dihydroindeno(1,2-b)fluorene-2,8-diamine, 4,6,6,10,12,12-hexamethyl-N2,N2,N8,N8-tetraphenyl-6,12-dihydroindeno(1,2-b)fluorene-2,8-diamine, 5,6,6,11,12,12-hexamethyl-N2,N2,N8,N8-tetraphenyl-6,12-dihydroindeno(1,2-b)fluorene-2,8-diamine and 4,5,6,6,12,12-hexamethyl-N2,N2,N8,N8-tetraphenyl-6,12-dihydroindeno(1,2-b)fluorene-2,8-diamine.    EXAMPLE - Dibromo terephthalic acid diethyl ester (60 g), ortho-tolylboronic acid (43 g), tetrakis(triphenylphosphine)palladium(0) (365 mg) and potassium carbonate (92 g) were heated in toluene (300 ml) and water (300 ml) for 4 hours to obtain 2,2''-dimethyl-(1,1',4',1'')terphenyl-2',5'-dicarboxylic acid diethyl ester (A). (A) (39 g) was dissolved in tetrahydrofuran (500 ml) and the suspension was added in 3 molar methylmagnesium chloride solution in tetrahydrofuran (195 ml) and the mixture was stirred at 5 degrees C for 6 hours to obtain 2-(5'-(1-hydroxy-1-methyl-ethyl)-2,2''-dimethyl-(1,1',4',1'')terphenyl-2'-yl)-propan-2-ol (B). (B) (33.7 g) was dissolved in dichloromethane (300 ml), cooled to 5 degrees C and added to a mixture of polyphosphoric acid (80 g) in methane sulfonic acid (55 ml) to obtain 4,6,6,10,12,12-hexamethyl-6,12-dihydro-indeno(1,2-b)fluorene (C). (C) (33.8 g) was dissolved in dichloromethane (1250 ml), cooled to 0 degrees C and mixed with a solution of sodium carbonate (33 g) in water (825 ml). After the addition of bromine (220 mmol) (11.3 ml), the suspension was stirred for 6 hours at 5 degrees C to obtain 2,8-dibromo-4,6,6,10,12,12-hexamethyl-6,12-dihydro-indeno(1,2-b)fluorene (D). (D) (38 g) was dissolved in toluene (1400 ml), added to diphenyl amine (31.1 g) and saturated with argon. Sodium tert-butoxide (23.5 g), 1M solution of tri-tert-butylphosphine in toluene (3.9 ml) and palladium(II) acetate were added to the above solution and mixed and heated for 4 hours to obtain 4,6,6,10,12,12-hexamethyl-N,N,N',N'-tetraphenyl-6H,12H-indeno(1,2-b)fluoren-2,8-diamine.