NOVELTY - An arylamine compound (I) is new.    USE - New arylamine compound is used as hole injection materials, hole transport material, or hose material in light-emitting layer, positive hole transport layer, or positive hole injection layer of organic electroluminescent elements (all claimed) used for flat light sources, displays, and electrophotographic photoreceptors. The triquinacene compound can also be used as intermediate of electronic materials e.g. solar cell materials, image sensors, intermediate of supramolecular construction, and intermediates of pharmaceuticals and agrochemicals.    ADVANTAGE - The new arylamine compound provides organic electroluminescent elements having excellent external quantum efficiency and durability, and low drive voltage.    DETAILED DESCRIPTION - An arylamine compound of formula (I), is new.    rings A, B', C'=6-24C aryl (optionally substituted by methyl, ethyl, 3-18C linear, branched or cyclic aliphatic hydrocarbyl, methoxy, ethoxy, 3-18C linear, branched or cyclic alkoxy, cyano, 6-40C aryl, 6-40C aryloxy, 3-40C heteroaryl, and/or halo) or 3-24C heteroaryl (optionally substituted by methyl, ethyl, 3-18C linear, branched or cyclic aliphatic hydrocarbyl, methoxy, ethoxy, 3-18C linear, branched or cyclic alkoxy, cyano, 6-40C aryl, 6-40C aryloxy, 3-40C heteroaryl, and/or halo);    R1-R4=H, methyl, ethyl, 3-18C linear, branched or cyclic aliphatic hydrocarbyl, methoxy, ethoxy, 3-18C linear, branched or cyclic alkoxy, cyano, 6-40C aryl, 6-40C aryloxy, or 3-40C heteroaryl;    Ar1,Ar2=6-40C aryl (optionally substituted by methyl, ethyl, 3-18C linear, branched or cyclic aliphatic hydrocarbyl, methoxy, ethoxy, 3-18C linear, branched or cyclic alkoxy, cyano, 6-40C aryl, 6-40C aryloxy, 3-40C heteroaryl, diarylamino, and/or halo) or 3-40C heteroaryl (optionally substituted by methyl, ethyl, 3-18C linear, branched or cyclic aliphatic hydrocarbyl, methoxy, ethoxy, 3-18C linear, branched or cyclic alkoxy, cyano, 6-40C aryl, 6-40C aryloxy, 3-40C heteroaryl, diarylamino, and/or halo);    n=1-3;    m,p=0-2;and    n+m+p=3.    INDEPENDENT CLAIMS are included for the following:    (1) manufacture of compound (I); and    (2) triquinacene compound of formula (II).    X=chloro, bromo, iodo or trifluoromethanesulfonyloxy.