DIAMINOTERPHENYL DERIVATIVE AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR PRODUCED THEREFROM

PURPOSE:To provide a new diaminoterphenyl derivative having excellent charge transfer capability and light stability and suitable as a charge transfer material of an electrophotographic photorecepter having high sensitivity and excellent durability and useful for an electrostatic copier, a laser beam printer, etc. CONSTITUTION:The compound of formula I [R to R are H, (substituted) alkyl or alkoxy; (n) is integer of 1-5], e.g. the compound of formula II. The compound can be produced by reacting a compound of formula (a) with a compound of formula (b) (X is halogen) in the presence of a copper catalyst and a basic substance and reacting the resultant compound of formula (c) with a compound of formula (d) in the presence of a copper catalyst and a basic substance. The NH2 group in the compound of formula (a) is preferably acetylated beforehand to obtain the monosubstituted compound of formula (c). Since the compound contains a terphenyl structure known as a quencher introduced into the molecule, it exhibits high charge-transfer capability and excellent light stability. Accordingly, an electrophotographic photorecepter having the above effects can be produced by forming photosensitive layer containing the above compound on an electrically conductive substrate.