| 摘要 |
NEW MATERIAL:A compound of formula I (R1, R2 are H, lower alkyl, lower alkoxy, Cl). USE:A photoconductive material which is used for electrophotography. It can provide a photosensitive substance with high flexibility and sensitivity. It can be sensitized optically or chemically using a sensitizing agent such as a dye or Lewis acid. PREPARATION:The reaction between 3,3'-dimethylbenzidine of formula II and a compound of formula III (X is I, Br) is carried out in the presence of a copper powder, copper oxide or copper halide and a base such as sodium hydroxide and potassium carbonate, when needed, in a solvent such as nitrobenzene at 150-250 deg.C to give the compound of formula I. |
