2,3-Bis(arylethényl)quinoxalines, process for their preparation and their use as photoconducting compounds

Abstract

Abstract 1. Photoconductive 2,3-bis(arylethenyl)quinoxalines of the formula I see diagramm : EP0149802,P15,F2 in which R1 denotes phenyl or naphthyl, which can be substituted by at least one substituent from the series comprising halogen, amino, monoalkylamino, dialkylamino, monoarylamino, diarylamino, alkyl, alkenyl, alkylenedioxy, azido, halogenoalkyl, perfluoroalkyl having 1 to 4 carbon atoms each, phenyl or styryl, hydroxy, alkoxy having 1 or 2 carbon atoms, phenoxy, carboxy, carboxyalkyl having 1 to 4 carbon atoms, carbamido, cyano, mercapto, sulfonato and sulfonamido ; styryl, anthracenyl, phenanthrenyl, quinolinyl, carbazolyl, furanyl, pyrryl, pyridyl or ferrocenyl, which can be substituted by halogen, halogenoalkyl, alkyl, alkylenedioxy, alkoxy, carboxyalkyl having 1 to 4 carbon atoms each, amino, monoalkylamino, dialkylamino having 1 to 4 carbon atoms each, monoarylamino, diarylamino, cyano, phenoxy or azido ; or pyrenyl, thienyl, julolidyl, benzofuranyl, benzothienyl, benzoxazolyl or benzimidazolyl ; and R2 and R3 are identical or different and each denote hydrogen, halogen, amino, monoalkylamino, dialkylamino, alkyl, alkoxy, alkenyl having 1 to 4 carbon atoms each, hydroxyl, carboxyl, carboalkoxy having 1 to 4 carbon atoms or phenoxy ; or together represent a fused-on, carboxylic aromatic ring, except for compounds of formula I in which R2 and R3 each denote hydrogen, and R1 denotes phenyl, dibenzyl, styrylphenyl, styryl, p-hydroxyphenyl, m- or p-methoxyphenyl, 2,3- or 3,4-dimethoxyphenyl, 3,4,5-trimethoxyphenyl, 3,4-methylenedioxyphenyl, o-, m- or p-chlorophenyl, o- iodophenyl, p-cyanophenyl, furfuryl or thienyl ; R2 denotes methyl and R3 denotes hydrogen and R1 denotes phenyl, p-methoxyphenyl, 3,4-dimethoxyphenyl or 3,4-methylenedioxyphenyl ; R2 denotes amido or nitro and R3 denotes hydrogen and R1 denotes phenyl, p-chlorophenyl, o- or m-hydroxyphenyl, m-methoxyphenyl, 3,4-dimethoxyphenyl or 2-hydroxy-1-naphthyl.

Inventors

• 👤 Georg Dr.Dipl.Chem. Pawlowski

Bibliographic Details