- USE OF INDANTHRENE COMPOUNDS IN ORGANIC PHOTOVOLTAICS
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The present invention relates to an organic solar cell which comprises at least one photoactive region which comprises at least one indanthrene compound which is in contact with at least one fullerene compound, and to the use of indanthrene compounds in o
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- Synthesis of the Pentacyclic Intermediate for Dynemicin A and Unusual Formation of Spiro-oxindole Ring
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A pentacyclic compound was synthesized as an important intermediate of antitumor antibiotic dynemicins.The key step was the intramolecular Heck reaction using catalytic Pd reagent.During the course of the synthetic studies, an unusual spiro ring compound
- Okita, Takaaki,Isobe, Minoru
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p. 11143 - 11152
(2007/10/02)
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- EQUILIBRIUM NH ACIDITY OF 4-SUBSTITUTED 1-AMINOANTHRAQUINONES IN DIMETHYL SULFOXIDE
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The equilibrium acidity of 1-amino-4-R-anthraquinones (R = CH3O, H, Cl, Br, NO2) was determined by transmetallation in DMSO (the Na+ cation, 25 deg C).A linear correlation was established between the pK values of the 4-substituted 1-aminoanthraquinones and the ?p- constants of the substituents R.The conduction of the electronic effect of the substituents R is stronger in the aminoanthraquinones than in the anilines and is closer to the naphthylamines.A linear relation is observed between the conduction of the electronic effect of the substituent and the square of the coefficient in the HOMO for the carbon atom at the point of addiion of the substituent in the series of anions of NH acids of various structure types.The increase in the NH acidity with change in the structure type of the NH acid is not necessarily accompanied by a decrease in the conduction of the electronic effect of the substituents.
- Os'kina, I. A.,Vlasov, V. M.,Terekhova, M. I.,Petrov, E. S.
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p. 2041 - 2044
(2007/10/02)
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- Reaction of 5-Chloroanthra-6-isoxazolone with Oxygen-Containing Nucleophiles
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Facile nucleophilic substitution of the chloride ion to give 5-alkoxy- or 5-aryloxyanthra-6-isoxazolones occurs in the reaction of 5-chloroanthra-6-isoxazolone with alcohols and phenols.The possibility of conversion of the synthesized isox
- Zolotareva, G. I.,Gornostaev, L. M.
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p. 1057 - 1058
(2007/10/02)
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- PHOTOCHEMICAL REACTION OF 9,10-ANTHRAQUINONE AND ITS DERIVATIVES WITH PYRIDINE
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The previously unknown photochemical reaction of 9,10-anthraquinone with pyridine in an atmosphere of argon takes place with formation of 2-(1,2-dihydropyridino)- or 2-(1,4-dihydropyridino)-9,10-anthraquinone, which is converted by the action of alkali into 2-aminoanthraquinone.In the presence of atmospheric oxygen the reaction product after treatment whith alkali is 1-aminoanthraquinone in addition to 2-aminoanthraquinone.The 1- and 2-methoxyanthraquinones and chloroanthraquinones react with pyridine in the light and form, after treatment with alkali, substituted aminoanthraquinones.
- Loskutov, V.A.,Lukonina, S.M.,Konstantinova, A.V.,Fokin, E.P.
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p. 500 - 504
(2007/10/02)
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- Triazinyl dyes
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Vat dyestuffs of the formula EQU1 wherein R represents alkyl with 1 to 4 carbon atoms, R1 and R2 represent hydrogen or alkyl with 1 to 4 carbon atoms and each of A1 and A2 represents a vattable radical with 3 to 7 condensed rings are characterized by improved resistance to alkali and are suitable for dyeing and printing the most diverse materials, in particular fibers made from natural or regenerated cellulose.
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