申请人:Ricoh Co., Ltd.
公开号:US04272598A1
公开(公告)日:1981-06-09
The present invention provides disazo compounds expressed by the general formula I ##STR1## [wherein A represents ##STR2## (wherein R represents alkyl radical, alkoxy radical, nitro radical, dialkylamino radical or halogen, n is 0 or an integer of 1, 2 or 3, and R may be either identical or different when n is an integer of 2 or 3)]; a process for the preparation of said compounds; and electrophotographic sensitive materials having a high sensitivity as well as a high flexibility which comprise a conductive support and a photosensitive layer formed thereon, said photosensitive layer containing a disazo compound, as an effective ingredient, which is expressed by the general formula II ##STR3## [wherein A' represents ##STR4## (wherein X represents aromatic rings such as benzene ring, naphthalene ring, etc., hetero rings such as indole ring, carbazole ring, benzofuran ring, etc. or their substituents, Ar.sub.1 represents aromatic rings such as benzene ring, naphthalene ring, etc., hetero rings such as dibenzofuran, etc. or their substituents, Ar.sub.2 and Ar.sub.3 represent aromatic rings such as benzene ring, naphthalene ring, etc. or their substituents, R.sub.1 and R.sub.3 represent respectively hydrogen, lower alkyl radical, phenyl radical or their substituents, and R.sub.2 represents lower alkyl radical, carboxyl radical or their esters)].
本发明提供了由通式I表示的二氮杂基化合物: ##STR1## [其中A表示##STR2## (其中R表示烷基基团,烷氧基团,硝基基团,双烷基氨基基团或卤素,n为0或1、2或3的整数,当n为2或3的整数时,R可以是相同的或不同的)]; 以及制备上述化合物的方法;以及具有高灵敏度和高柔性的电子照相敏感材料,其包括一个导电支撑和在其上形成的光敏层,所述光敏层包含由通式II表示的二氮杂基化合物作为有效成分: ##STR3## [其中A'表示##STR4## (其中X表示芳香环,如苯环,萘环等,杂环,如吲哚环,咔唑环,苯并呋喃环等或它们的取代基,Ar.sub.1表示芳香环,如苯环,萘环等,杂环,如二苯并呋喃等或它们的取代基,Ar.sub.2和Ar.sub.3表示芳香环,如苯环,萘环等或它们的取代基,R.sub.1和R.sub.3分别表示氢,低烷基基团,苯基基团或它们的取代基,R.sub.2表示低烷基基团,羧基基团或它们的酯基].