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  • 1
    Electronic Resource
    Electronic Resource
    Ring expansion of .alpha.-hydroxyoxetanes to dihydrofurans (1972)
    s.l. : American Chemical Society
    The @journal of organic chemistry 37 (1972), S. 481-486 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00968a034
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  • 2
    Electronic Resource
    Electronic Resource
    Photochemical conversion of 4-(o-nitrobenzylidene)-4H-pyrans to 1-hydroxy-3-oxospiro[indoline-2,4'-4'H-pyran] derivatives (1973)
    s.l. : American Chemical Society
    The @journal of organic chemistry 38 (1973), S. 2834-2838 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00956a022
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  • 3
    Electronic Resource
    Electronic Resource
    Reactions with 2-aminonicotinic acid, I Some 8-aza analogs of quinazolinones and derived tricyclic compounds (1983)
    Springer
    Monatshefte für Chemie 114 (1983), S. 1197-1203 
    Details
    ISSN: 1434-4475
    Keywords: 10-Aza-5,6-dihydro-3-hydroxy-5-(2-methylphenyl)-2-substituted-1H-pyrido[1,2-a]quinazoline-1,6-diones ; Bis-2,4,6-trichlorophenyl malonates ; 3H-Pyrido[2,3-d]pyrimidin-4-ones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Fusion von 2-Acetamidonikotinsäure mito-Toluidin,p-Bromanilin odero-Chloranilin ergab die entsprechenden 3-Aryl-2-methyl-pyrido[2,3-d]pyrimidin-4(3H)-one (4) und die 8-Aza-Analogen von 3-Aryl-2-methyl-4-chinazolinonen zusammen mit 2-Aminonikotinsäure. 2-Methyl-3-(2-methylphenyl)-pyrido[2,3-d]pyrimidin-4(3H)-on (4a), das 8-Aza-Analog von Methaqualon, wurde mittels Kondensation mit einigen aromatischen Aldehyden zu den 2-substituierten Styryl-Derivaten6 umgesetzt. Die Reaktion mit monosubstituierten Bis-2,4,6-trichlorphenylmalonaten ergab tricyclische 10-Aza-5,6-dihydro-3-hydroxy-5-(2-methylphenyl)-2-substituierte 1H-Pyrido[1,2-a]quinazolin-1,6-dione (8).
    Notes: Abstract The fusion of 2-acetamidonicotinic acid witho-toluidine,p-bromoaniline oro-chloroaniline afforded the corresponding 3-aryl-2-methyl-pyrido-[2,3-d]pyrimidin-4(3H)-ones (4), the 8-aza analogs of 3-aryl-2-methyl-4-quinazolinones, alongside 2-aminonicotinic acid. 2-Methyl-3-2(2-methylphenyl)-pyrido[2,3-d]pyrimidin-4(3H)-one (4a), the 8-aza analog of methaqualone, was converted to the 2-substituted styryl derivatives6 by condensation with some aromatic aldehydes and to the tricyclic system, 10-aza-5,6-dihydro-3-hydroxy-5-(2-methylphenyl)-2-substituted-1H-pyrido [1,2-a] quinazoline-1,6-diones (8) by reaction with monosubstituted bis-2,4,6-trichlorophenyl malonates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799933
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  • 4
    Electronic Resource
    Electronic Resource
    Reactions with pyrrolidine-2,4-diones, I. New synthesis of pyrano[2,3-c]pyrrole and pyrrolo[3,4-b]pyridine systems (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 475-484 
    Details
    ISSN: 1434-4475
    Keywords: Bis-2,4,6-trichlorophenyl malonates ; 1,5-Diaryl-1,5-dihydro-4-amino-2H-pyrrol-2-ones ; 1,5-Diarylpyrrolidine-2,4-diones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Synthese einiger substituierter 4-Hydroxy-2,5,6,7-tetrahydro-pyrano[2,3-c]pyrrol-2,5-dione (5) und 4-Hydroxy-1,2,6,7-tetrahydro-5H-pyrrolo[3,4-b]pyridin-2,5-dione (6) gelingt durch Reaktion von 1,5-Diaryl-pyrrolidin-2,4-dion (1) bzw. 1,5-diaryl-1,5-dihydro-4-amino-2H-pyrrol-2-on (3) mit Malonsäure-bis-2,4,6-trichlorphenylester (4).
    Notes: Abstract The synthesis of some substituted 4-hydroxy-2,5,6,7-tetrahydro-pyrano[2,3-c]pyrrole-2,5-diones (5) and 4-hydroxy-1,2,6,7-tetrahydro-5H-pyrrolo[3,4-b]pyridine-2,5-diones (6) by reacting 1,5-diaryl-pyrrolidine-2,4-diones (1) and 1,5-diaryl-1,5-dihydro-4-amino-2H-pyrrol-2-ones (3) with bis-2,4,6-trichlorophenyl malonates (4) is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799923
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  • 5
    Electronic Resource
    Electronic Resource
    Ketocoumarins as photosensitizers and photoinitiators (1983)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 23 (1983), S. 1022-1024 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Several 3-ketocoumarins with alkoxy or dialkylamino substituents in the 7 position, which are efficient sensitizers for crosslinkable polymers, were evaluated as photoinitiators. Proper combinations of certain derivatives of these ketocoumarins with activators such as amines, acetic acid derivatives, and alkoxypyridinium salts gave quantum yields for initiated radical polymerization much higher than that obtained from the Michler's ketone/benzophenone combinations. For each class of activators the dependence of the efficiency of polymerization on the redox properties of the ketocoumarins is explained in terms of charge transfer or electron transfer from the activator to the excited ketocoumarin (acetic acid and amine activators, respectively) or electron transfer in the opposite direction (pyridinium salt activators).
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760231809
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  • 6
    Electronic Resource
    Electronic Resource
    Unique hydrophobic interactions of pyrene in aqueous solution as effected by polyelectrolytes and surfactantsPresented at the Tenth Northeast Regional Meeting of the American Chemical Society, Clarkson College, Potsdam, New York, June 30-July 3, 1980. (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 21 (1983), S. 2473-2490 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Pyrene substituents covalently bounded to polyelectrolytes show not only excited-state interactions but also unique ground-state interactions in aqueous solution. The pyrene moieties in pyrenesubstituted ionic molecules also show these interactions when aqueous solutions of these molecules are treated with polyelectrolytes or surfactants well below their critical micelle concentrations. These hydrophobic interactions are revealed by changes in absorption, fluorescence, and excitation spectra. The well-resolved vibrational bands in the absorption and excitation spectra of pyrene become somewhat diffuse, whereas monomer fluorescence is reduced and replaced by excimer fluorescence. The rationale for these results is that the pyrene moieties in these ionic solutions seek out hydrophobic locations on the polyelectrolytes or surfactants, where pyrene aggregation is responsible for these interactions and the corresponding changes in spectra.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.170210829
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