TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises: charging a vessel with a mixture comprising imidazole, an acyl or sulfonyl anhydride, and one of (A) or (B); heating the mixture at 40-120 degrees C in a non aqueous solvent until (A) or (B) is consumed; and quenching the reaction with water to precipitate (I) (when the reagent is (B)) or substituted is-(4-(2,3-dihydro-1H-imidazol-2-yl)-phenyl)-phenyl-amine compounds of formula (II) (when the reagent is (A)). Preferred Components: (A) is preferably biphenyl-4-yl-diphenyl-amine. (B) is preferably N4,N4,N4',N4'-tetraphenyl-biphenyl-4,4'-diamine, N4,N4'-diphenyl-N4,N4'-di-p-tolyl-biphenyl-4,4'-diamine or N4,N4'-diphenyl-N4,N4'-di-m-tolyl-biphenyl-4,4'-diamine. (III) is a substituted polyformylated-triphenyl-amine compounds of formula (IIIa), (IIIb) or (IIIc). The non aqueous solvent is tetrahydrofuran, diethylether, diisopropylether, dichloromethane, chloroform, acetonitrile, propionitrile, dioxane, dioxolane, tetrahydropyran, dimethoxyethane, glymes, nitromethane, ethyl acetate, propyl acetate, acetone, methyl-ethylketone, methyl isobutyl ketone, acetic acid, trifluoroacetic acid, trifluoroacetic anhydride, acetic anhydride or alkanes. The acyl is trifluoroacyl. Preferred Process: In the process for making (III), the heating is carried out at 40-120 degrees C.R4 = 1-5C alkyl, 3-7C cyclic alkyl, OH, omega -hydroxy substituted 2-8C alkyl, halo, aryl (optionally substituted with 1-5C alkyl). Preferred Definitions:    R1-R3, R5, Y1 = H;    X = trifluoroacetyl; and    n = 2.    SPECIFIC COMPOUNDS - 3 Compounds (I) are specifically claimed i.e. 1-(2-(4-((4'-((4-(1,3-Bis-(2,2,2-trifluoro-acetyl)-2,3-dihydro-1H-imidazol-2-yl)-phenyl)-p-tolyl-amino)-biphenyl-4-yl)-p-tolyl-amino)-phenyl)-3-(2,2,2-trifluoro-acetyl)-2,3-dihydro-imidazol-1-yl)-2,2,2-trifluoro-ethanone of formula (Ia), 1,1',1'',1'''-(2,2'-(4,4'-(biphenyl-4,4'-diylbis((4-(1,3-bis(2,2,2-trifluoroacetyl)-2,3-dihydro-1H-imidazol-2-yl)-3-methylphenyl)azanediyl))bis(4,1-phenylene))bis(1H-imidazole-3,2,1(2H)-triyl))tetrakis(2,2,2-trifluoroethanone) and 1,1',1'',1''',1'''',1''''',1'''''',1'''''''-(2,2',2'',2'''-(4,4',4'',4'''-(biphenyl-4,4'-diylbis(azanetriyl))tetrakis(benzene-4,1-diyl))tetrakis(1H-imidazole-3,2,1(2H)-triyl))octakis(2,2,2-trifluoroethanone). The preparation of 1-(2-(4-(biphenyl-4-yl-(4-(1,3-bis-(2,2,2-trifluoro-acetyl)-2,3-dihydro-1H-imidazol-2-yl)-phenyl)-amino)-phenyl)-3-(2,2,2-trifluoro-acetyl)-2,3-dihydro-imidazol-1-yl)-2,2,2-trifluoro-ethanone of formula (IIa) is specifically claimed as (II). The preparation of 4,4'-(biphenyl-4-ylazanediyl)dibenzaldehyde of formula (IIIa), 4,4',4'',4'''-(biphenyl-4,4'-diylbis(azanetriyl))tetrabenzaldehyde, 4,4'-(biphenyl-4,4'-diylbis(p-tolyl-azanediyl))dibenzaldehyde and 4,4'-(biphenyl-4,4'-diylbis((4-formylphenyl)azanediyl))bis(2-methylbenzaldehyde) is specifically claimed as (III).    EXAMPLE - No suitable example given.