Dinitro compounds, diamino compounds and triamine compounds and preparation methods thereof

摘要

Compounds having formula (I), which are useful as starting or intermediate materials for preparing organic photoconductive materials, or as organic photoconductive materials: <IMAGE> (I) wherein R1 is a nitro group, an amino group or a diphenylamino group which may have a substituent; and R2 is hydrogen or an alkyl group having 1 to 6 carbon atoms, and methods of preparing the above compounds are disclosed.