- QUINACRIDONE DERIVATIVE, AND PHOTOACTIVE LAYER AND PHOTOELECTRIC CONVERSION DEVICE INCLUDING SAME
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A quinacridone derivative may be represented by Chemical Formula 1, and a photoactive layer and photoelectric conversion device may include the same.
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Paragraph 0082-0088
(2013/03/26)
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- METHYLATION OF LINEAR trans-QUINACRIDONE IN A TWO-PHASE CATALYTIC SYSTEM
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The methylation of linear trans-quinacridone with methyl iodide, dimethyl sulfate, and methyl benzenesulfonate was realized under the conditions of phase-transfer catalysis in the sodium hydroxide-aromatic hydrocarbon system in the presence of quaternary ammonium salts.N,N'-Dimethylquinacridone was obtained as the only product with a yield of 90-94percent.Three polymorphous modifications (the α, β, and γ forms) were isolated and identified, and their mutual transformations were studied.By methylation in the two-phase system it is possible to obtain N,N'-dimethylquinacridone in the β modification in the presence of catalytic amounts and in the γ modification in the presence of stoichiometric amounts of the alkyltrimethylammonium chloride.
- Pushkina, L. L.,Dubovaya, L. V.,Shelyapin, O. P.,Shein, S. M.
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p. 1771 - 1775
(2007/10/02)
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