The present invention provides disazo compounds expressed by the general formula: ##STR1## [wherein A represents a member selected from the group consisting of ##STR2## (wherein X represents a member selected from the group consisting of aromatic rings such as benzene ring, naphthalene ring, etc., hetero rings such as indole ring, carbazole ring, benzofuran ring, etc. and their substituents, Ar.sub.1 represents a member selected from the group consisting of aromatic rings such as benzene ring, naphthalene ring, etc., hetero rings such as dibenzofuran ring, etc. and their substituents, Ar.sub.2 and Ar.sub.3 represent a member selected from the group consisting of aromatic rings such as benzene ring, naphthalene ring, etc. and their substituents, R.sub.1 and R.sub.3 represent a member selected from the group consisting of hydrogen, lower alkyl radical or phenyl radical and their substituents and R.sub.2 represents a member selected from the group consisting of lower alkyl radical, carboxyl radical and their esters)]; 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 said disazo compound as an effective ingredient.
本发明提供了由一般式表示的二氮杂化合物:##STR1## [其中A代表从以下组中选择的成员之一:##STR2##(其中X代表从芳香环,如苯环,
萘环等,杂环,如
吲哚环,
咔唑环,
苯并呋喃环等及其取代基中选择的成员,Ar.sub.1代表从芳香环,如苯环,
萘环等,杂环,如
二苯并呋喃环等及其取代基中选择的成员,Ar.sub.2和Ar.sub.3代表从芳香环,如苯环,
萘环等及其取代基中选择的成员,R.sub.1和R.sub.3代表从氢,低烷基基团或苯基基团及其取代基中选择的成员,R.sub.2代表从低烷基基团,羧基基团及其酯中选择的成员];制备所述化合物的方法;以及具有高灵敏度和高灵活性的电子照相敏感材料,其包括导电支撑和在其上形成的感光层,所述感光层含有上述二氮杂化合物作为有效成分。