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Pyrrolo tropylium salts

In numerous patents the synthesis of suitable furo-, thieno-, and pyrrolo-tropylium salts is described, for example, that of squarylium dyes like 623 and 624 (Scheme 169 85JAP60/262163 86JAP61/185487 88JAP63/41858, 88JAP63/102990). These substances serve as components of photoconduc-tive thin layers for electrophotographic photoreceptors. The materials are claimed to exhibit increased sensitivity, stability on storage, and durability to laser-beam reading. [Pg.389]

A number of furo-, pyrrolo- and thieno-annelated tropylium salts (XXVI, XXVII) have been prepared. [Pg.52]

See other pages where Pyrrolo tropylium salts is mentioned: [Pg.131]   
See also in sourсe #XX -- [ Pg.64 , Pg.131 ]

See also in sourсe #XX -- [ Pg.64 , Pg.131 ]



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