| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new compound useful as a charge transfer material having a high transfer degree and giving stable organic thick films, even when used in a high concentration, and suitable for producing high performance electrophotographic photosensitizers. SOLUTION: A compound of formula I [Ar1 and Ar2 are each an aryl; Ar3 is an aromatic group of formula II or III (R1 and R2 are each H, a 1-4C alkyl or the like), provided that the position of the amino group is the meta-position or the para-position, when Ar3 is phenylene], for example, 4,4'-bis(N-3",4"- methylenedioxyphenyl-N-phenylamino)biphenyl. For example, the compound of formula I wherein Ar1 is equal to Ar2 is obtained by subjecting 3,4- methylenedioxygromobenzene and an aromatic acetamide of the formula: Ar1 NHAc to a U11mann's reaction, hydrolyzing the amide group of the obtained coupling compound in the presence of a potassium hydroxide in an alcoholic solvent, and subsequently coupling the obtained amine of formula IV with a substituted biphenyl or benzene of the formula: X-Ar3-X (X is Cl, Br or the like).
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