Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1980-1984  (6)
  • 1970-1974  (23)
  • 1960-1964  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 1403-1413 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Reaktionsfähigkeit zahlreicher Carbonsäureamid-Komplexe gegenüber 4-Amino-1.3-dimethyl-uracil wird ermittelt.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 398-406 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions with Hydrogen Halide Adducts of Nitriles, IV The Structure of 6-Chloro-2 pyridonesThe Structure of 6-Chloro-2-pyridones in solid state and in solution is investigated by molecular weight determinations and i.r., n. m. r., and u.v.-spectra.Concentrated solutions of the pyridones in chloroform contain mainly dimers. The i.r.-spectra show that in the solid state the substances are present in the pyridone form. In solution monomeric 6-chloro-2-pyridones are in equilibrium with appreciable amounts of their hydroxy tautomers. The position of the equilibrium depends strongly on the solvent.
    Notes: Die Struktur von 6-Chlor-pyridonen-(2) wird mit Hilfe von Molekular-gewichtsbestimmungen, IR-, NMR- und UV-Spektren untersucht. Konzentrierte Lösungen der Pyridone in Chloroform enthalten vorwiegend Dimere. IR-Spektren zeigen im kristallinen Zustand die Lactamstruktur an. Monomere 6-Chlor-pyridone-(2) stehen mit 6-Chlor-2-hydroxy-pyridinen im Gleichgewicht. Die Lage des Gleichgewichts ist stark lösungsmittelabhängig.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 407-412 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions with Hydrogen Halide Adducts of Nitriles, V Synthesis of 3,4-Dihydropyridines6-Chloro-5-aryl-3,4-dihydro-2-pyridones (6-9) are obtained by reaction of 4-aryl-4-cyanobutyryl chlorides (1-4) with hydrogen chloride in p-dioxane. The cyclisation reactions are only possible if α-chloro-enamines can be formed as intermediates.
    Notes: 4-Aryl-4-cyan-butyrylchloride (1-4) cyclisieren in Gegenwart von Chlorwasserstoff zu 6-Chlor-5-aryl-3.4-dihydro-pyridonen-(2) (6-9). Die Ringschlußreaktion erfolgt nur dann, wenn intermediär α-Chlor-enamine gebildet werden können.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 389-397 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions with Hydrogen Halide Adducts of Nitriles, III. New Synthesis of PyridinesThe reactions of unsaturated γ-cyanocarboxylic acid chlorides (3, 6, 9, 12) with hydrogen chloride in aliphatic ethers yield 6-chloro-2-pyridones (13-16). In order to study the structure of these compounds, they were converted to 6-chloro-2-methoxypyridines 20-23 and 6-chloro-l-methyl-2 pyridones 24-27.
    Notes: Die Reaktion von ungesättigten γ-Cyan-carbonsäurechloriden (3, 6, 9, 12) mit Chlorwasserstoff führt zu 6-Chlor-Pyridonen-(2) (13-16). Diese werden in die für Strukturuntersuchungen erforderlichen 6-Chlor-2-methoxy-pyridine 20-23 und 6-Chlor-l-methyl-pyridone-(2) 24-27 übergeführt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 1545-1554 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Orthoamides, XXVI. Synthesis and Reactions of 1,2-Bis(dialkylamino)ethylenesCH-active dimethylaminomethylene compounds react with the aminal tert-butyl ester 2 to give 1,2-bis(dimethylamino)ethylenes (3). Reanimation of 3 takes place only in the presence of an acid catalyst and only at the 2-dimethylamino group. 1-Benzoyl- (3a), 1-cyano-(3d), and 1-ethoxycarbonyl-1,2-bis(dimethylamino)ethylene (3e) undergo cyclization with amidines, guanidine, or thiourea to give the corresponding 5-dimethylaminopyrimidines (9a - f, 11) and with hydrazine to yield 4- dimethylamino-3-phenylpyrazole (10).
    Notes: CH2-aktive Dimethylaminomethylen-Verbindungen bilden mit dem Aminal-tert-butylester 2, 1,2-Bis(dimethylamino)äthylene 3. Eine Umaminierung von 3 erfolgt nur an der 2-Dimethyl-amino-Gruppe unter saurer Katalyse. 1-Benzoyl- (3a), 1-Cyan- (3d) und 1-Äthoxycarbonyl-1,2-bis(dimethylamino)äthylen (3e) reagieren mit Amidinen, Guanidin sowie Thioharnstoff unter Ringschluß zu den entsprechenden 5-Dimethylaminopyrimidinen (9a - f, 11), mit Hydrazin entsteht 4-Dimethylamino-3-phenylpyrazol (10).
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 82 (1970), S. 548-549 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 256-264 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Orthoamides, XIII Studies on the Mechanism of Electrophilic Substitution of the Formyl-H Atom in Ortho Formic Acid AmidesOrtho formic acid amides and N-halogen carboxylic acid amides, halogen ureas or N-chloro urethanes primarily react to give adducts; these form ylides in the presence of bases. The ylides react by an intramolecular SE1- or SNi-mechanism to give O,N-acetals of the corresponding acyl isocyanates (isoureas).
    Notes: Bei der Umsetzung von Orthoamiden mit N-Halogen-carbonsäureamiden, -harnstoffen und N-Chlor-urethan wurden Primär-Addukte nachgewiesen. Diese bilden in Gegenwart von Basen Ylide, welche über einen intramolekularen SE1- oder SNi-Mechanismus C-N-Knüpfung eingehen unter Bildung von O.N-Acetalen der entsprechenden Acylisocyanate (Isoharnstoffe).
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 104 (1971), S. 2709-2726 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Orthoamides, XVIII Reaction of an Aminalester with Carboxylic and Thiocarboxylic Acid Amides or EstersAt room temperature, bis(dimethylamino)-tert-butoxymethane (1) reacts with carboxamides and thiocarboxamides at the amino group; at higher temperatures, further formylation takes place at the α-CH2 group. Esters of carboxylic and thiocarboxylic acids also react at the α-CH2 group.
    Notes: Carbonsäure- und Thiocarbonsäureamide reagieren mit Bis-dimethylamino-tert.-butyloxymethan (1) an der NH2-Gruppe, bei höherer Temperatur auch an der α-CH2-Gruppe unter Formylierung. Ebenfalls an der α-CH2-Gruppe erfolgt die Reaktion bei Carbonsäure- und Thiocarbonsäureestern.
    Additional Material: 9 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 3725-3731 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Orthoamides, XXIV. Synthesis and Reactions of Amide Thioacetals and Aminal ThioestersThe amide thioacetals 2 are obtained by reaction of the N,N-dimethylformamide dimethyl sulfate adduct 1 with sodium thiolates or by treatment of N,N-dimethylformamide diethyl acetal (3) with alkanthiols. Aminal thioesters 11 are formed by reaction of tetramethylformamidinium methyl sulfate (10) with alkali alkanethiolates or by treatment of aminal-tert-butylester 12 with alkanethiols. The compounds have properties similar to those of their oxygen homologues.
    Notes: Amidthioacetale 2 erhält man aus dem N,N-Dimethylformamid-Dimethylsulfat-Addukt 1 und Natriumthiolaten oder aus N,N-Dimethylformamid-diäthylacetal (3) und Alkanthiolen, Aminalthioester 11 aus Tetramethylformamidinium-methylsulfat (10) und Alkali-alkanthiolaten oder aus dem Aminal-tert-butylester 12 und Alkanthiolen. Die Verbindungen zeigen ähnliche Eigenschaften wie ihre Sauerstoff-Homologen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 94 (1961), S. 1241-1248 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1.3-Dimethyl-barbitursäure setzt sich mit Carbonsäure- und Thiocarbonsäureamiden sowie deren N-monosubstituierten Derivaten zu Enaminen, mit N.N-disubstituierten Derivaten zu Oxonolen um.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...