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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 79 (1979), S. 207-221 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Polymers and oligomers of diethanolaniline were reacted with 2-dicyanomethylen-1,3-indandione to yield colourless adducts, which can be converted to deep blue merocyanine dyes by heating to 80-120°C.
    Notes: Durch Umsetzung von Polymeren und Oligomeren des Diäthanolanilins mit 2-Dicyan-methylen-1,3-indandion werden farblose Addukte erhalten, die beim Erwärmen auf 80-120°C in tiefblaue Merocyaninfarbstoffe übergehen.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 53 (1976), S. 81-91 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Coloured polymers were obtained by copolymerisation of styrene with N-(2,4-dinitrophenylhydrazono methylene)-acrylamide (2), which can be synthesized by condensation of N-formylacrylamide (1) with 2,4-dinitrophenylhydrazine as well as by reaction of copolymers of (1) with 1,4-diaminoanthraquinone or 4-aminoazobenzene. Analyses of the products by gel permeation chromatography showed that the coloured substances were combined to the polymer chain by covalent bonding.
    Notes: Gefärbte Polymere werden erhaiten durch Copolymerisation von Styrol mit N-(2,4-Dinitrophenylhydrazono-methylen)-acrylsäureamid (2), das durch Kondensation von N-Formylacrylamid (1) mit 2,4-Dinitrophenylhydrazin dargestellt werden kann, sowie durch Umsetzung von Copolymerisaten des N-Formylacrylamids mit 1,4-Diaminoanthrachinon und 4-Aminoazobenzol. Die Produkte enthalten die Farbstoffe in kovalenter Bindung, wie durch Gelchromatographie gezeigt werden kann.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 914-921 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses with Nitriles, XXXV. Reactions of Tetracyanoethylene with Heterocyclic CompoundsThe reaction of tetracyanoethylene with barbituric acids yields tetrahydro-2H-pyrano[2.3-d]-pyrimidines (2a, b) or dipyrimidinylmalonodinitriles (3a, b) depending on the reaction temperature. 1,3-Disubstituted 5-pyrazolones react in a similar way. Reaction of 3-amino-pyrazoles with tetracyanoethylene results in elimination of HCN and formation of (tricyanovinyl)pyrazoles (12a, b), which cyclize to pyrazolo[3.4-b]pyridines (13a-c).
    Notes: Bei der Umsetzung von Tetracyanäthylen mit Barbitursäuren werden in Abhängigkeit von der Reaktionstemperatur Tetrahydro-2H-pyrano[2.3-d]pyrimidine (2a, b) oder Dipyrimidinylmalodinitrile (3a, b) erhalten. 1,3-Disubstituierte 5-Pyrazolone reagieren in ähnlicher Weise. Aus 3-Aminopyrazolen und Tetracyanäthylen entstehen unter Eliminierung von HCN (Tricyanvinyl)pyrazole (12a, b), welche zu Pyrazolo[3.4-b]pyridinen (13a-c) cyclisiert werden können.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 339 (1997), S. 742-745 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (N-Phenyl-aza-crown)-ethenyl-acridines - Complexing Chromoionophores and Precursors for Deep Blue Coloured HemicyaninesAromatic aldehyde derivatives of N-phenyl-aza-15-crown-5 and N-phenyl-aza-18-crown-6 (1a-b) are condensed with 9-methylacridine to give yellow phenyl-ethenylacridine derivatives 3a-b which are reversibly converted by protonation into deep blue colored hemicyanines, Using 9,10-dimethylacridinium perchlorate in the condensation with the crown ether aldehyde 1 the blue hemicyanine 6 is directly obtained. UV/VIS absorption spectra of the basic/acidic forms of the acridine derivatives are presented. The complex formation of the crown ether derivatives with Na+ and K+ are studied using 1H-NMR and UV/VIS spectroscopy.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es werden geeignete Synthesen angegeben für verschiedene 1,4,6-Trioxa-spiro-(4,4)-nonane, die die bemerkenswerte Fähigkeit haben, unter Volumenexpansion oder zumindest mit sehr geringem Schrumpf zu polymerisieren.
    Notes: Convenient syntheses are given for several 1,4,6-trioxa-spiro-(4,4)-nonanes, which possess the remarkable ability to polymerize under expansion in volume or at least with very low shrinkage.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1195-1200 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Syntheses with Nitriles, LVIII. A New Route to Isoxazolo[5,4-b]pyridinesReaction of dimeric malononitrile (2-amino-1-propene-1,1,3-tricarbonitrile) (1) with benzo-hydroximoyl chlorides in alkaline medium leads to substituted isoxazolo[5,4-b]pyridines 6a - e. The isoxazole derivative 4a is an isolable intermediate. Condensation of the mixed dimer from malononitrile and methyl cyanoacetate (methyl 3-amino-2,4-dicyanocrotonate) (3) with benzo-hydroximoyl chlorides yields methyl 3-amino-3-(5-amino-3-aryl-4-isoxalyl)-2-cyanoacrylates (5a - c). 6,7-Dihydro-6-oxoisoxazolo[5,4-b]pyridines 7a,c are obtained from 5a,c by elimination of alcohol.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 912-912 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0009-2940
    Keywords: Nitriles ; Spiro compounds ; Propellanes ; Indan derivatives ; Cycloaddition ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese with Nitriles, LXXXII1). - On spiro [indan-pyrans] and Indene-propellanes - Adducts of 2-(Diccyanomethylene)-1,3-indandione with 1,3-Dicarbonyl CompoundsThe reactivity of 2-(dicyanomethylene)-1,3-indandione (1) towards 1,3-dicarbonyl compounds depends strongly on the nature of the CH acidic component. While the reaction with dimedone yields a spiro[chromene-4,2′indan] (2), indene-propellanes (3) are formed with acetoacetic esters. Adducts of acetylacetone and benzoylacetic acid ethyl ester to 1 have been identified as spiro[indan-2,2′-pyrans] (4). The propellane structure 3 is proven by X-ray analysis. Adducts 6 of CH acidic components with 3-(dicyanomethylene)-2-indolones 5 are used for reference measurements.
    Notes: 2-(Dicyanmethylen)-1,3-indandion (1) zeigt gegenüber 1,3-Dicarbonylverbindungen ein überraschend differenziertes Reaktionsverhalten, das von der CH-aciden Komponente abhängt. Während mit Dimedon ein Spiro[chromen-4,2′-indan] (2) entsteht, führt die Reaktion mit Acetessigsäure-ethyl- bzw. -tert-butylester zur Bildung der Inden-propellane 3. Die Addukte von Acetylacaton und Benzoylessigsäure-ethylester an 1 erweisen sich als Spiro[indan-2,2′-pyrane] (4). Die Propellanstruktur 3 wird durch eine Röntgenkristallstrukturanalyse abgesichert. Addukte 6 CH-acider Komponenten an 3-(Dicyanmethylen)-2-indolone 5 werden für Vergleichsmessungen verwendet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 2276-2282 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses with Nitriles, XLV. 2-(1,3-Dioxo-2-indanylidene)benzimidazoline  -  an Isomer of IndigoThe reaction of 2-dicyanomethylene 1,3-indandione (1) with o-phenylenediamine has been investigated and 2-(1,3-dioxo-2-indanylidene)benzimidazoline (4) and (11H-indeno[1,2-b]quinoxaline-11-ylidene)malononitrile (5) have been isolated. Proof of structure is given by isolated intermediates and alternative syntheses. Compounds 4a-d can be classified as isomers of indigo with respect to the C = O and NH-functions.
    Notes: 2-Dicyanmethylen-1,3-indandion (1) reagiert mito-Phenylendiamin zu einem Gemisch von 2-(1,3-Dioxo-2-indanyliden)benzimidazolin (4) und (11H-Indeno[1,2-b]chinoxalin-11-yliden)-malononitril (5). Sowohl durch isolierte Zwischenprodukte, als auch durch Alternativsynthesen ergeben sich Strukturbeweise. Die Verbindungen 4a-d sind in bezug auf die Lage der C = O-bzw. NH-Funktionen als Isomere des Indigos anzusprechen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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