Library

X
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
  • Inorganic Chemistry  (15)
  • General Chemistry  (7)
Source
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Hydroxyalkylierung von Carbonsäure-dialkylamiden mit Epoxiden (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1621-1633 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydroxyalkylation of N.N-Dialkylcarboxamides with EpoxidesThe hydroxyalkylation of α-carbanions from N.N-dialkylcarboxamides with epoxides is demonstrated with eleven examples (1, 5, 12, 16, 18, 21, 25, 28, 32, 37, 41). Satisfactory yields are obtained with ethylene oxide and with mono- or unsymmetrically disubstituted oxiranes. Some γ-hydroxy amides were reduced with lithium aluminium hydride and the products subjected to Cope degradation.
    Notes: An elf Beispielen (1, 5, 12, 16, 18, 21, 25, 28, 32, 37, 41) wird die Hydroxyalkylierung von α-Carbanionen aus Carbonsäure-dialkylamiden mit Epoxiden in flüssigem Ammoniak beschrieben. Befriedigende Ausbeuten werden mit Äthylenoxid sowie mit mono- oder unsymmetrisch disubstituierten Oxiranen erhalten. Einige γ-Hydroxy-amide wurden mit Lithiumalanat reduziert und die Produkte nach Cope abgebaut.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050518
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Enhydrazine, 4 Die Umsetzung von Dimedon mit Hydrazonen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2143-2155 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enehydrazines, 4. The Reaction of Dimedone with HydrazonesIn the presence of p-toluenesulfonic acid dimedone reacts with araliphatic or aromatic hydrazones to form enehydrazones such as 4, 6, 8, and 10, which can be hydrogenated to the enehydrazines 12, 13, and 15. Under mild acid catalysis dimedone reacts with hydrazones (including aliphatic ones) to yield tetrahydroindazolinones 16 to 19, and 22 via hexahydroindazolinones such as 25 to 28.
    Notes: Dimedon bildet bei Gegenwart von p-Toluolsulfonsäure mit araliphatischen oder aromatischen Hydrazonen Enhydrazone wie 4, 6, 8 und 10, die zu den Enhydrazinen 12, 13 und 15 hydriert werden können. Bei milder Säurekatalyse entstehen aus Dimedon und (auch aliphatischen) Hydrazonen über die Stufe der Hexahydro-indazolinone-(4) wie 25-28 die Tetrahydro-indazolinone 16-19 und 22.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Enhydrazine, 5 Enhydrazone aus carbonyl-aktivierten Acetylenverbindungen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3807-3813 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enehydrazines, 5Enehydrazones from Carbonyl Activated Acetylenic CompoundsThe enehydrazones 3 are obtained from the hydrazones 2 with ethyl acetoacetate, the enehydrazones 6 and 7 with acetylene carboxylates, 10, 11 and 13 with acetylene ketones, and 15 and 18 with acetylene aldehydes. The products have E-configuration and are formed by syn-addition to the triple bond. Only in the case of phenylpropiolaldehyde (14) anti-addition followed by cyclization to the pyrazoles 16 has been observed.
    Notes: Aus den Hydrazonen 2 werden die Enhydrazone 3 mit Acetessigester, die Enhydrazone 6 und 7 mit Acetylencarbonsäureestern, 10, 11 und 13 mit Acetylen-ketonen und 15 und 18 mit Acetylen-aldehyden erhalten. Die Produkte haben E-Konfiguration und entstehen durch syn-Addition and die Dreifachbindung. Nur bei Phenylpropioladehyd (14) konnte auch anti-Addition mit nachfolgendem Ringschluß zu den Pyrazolen 16 beobachtet werden.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721051208
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Die Synthese von 5α-Stigmasta-22,25-dien-3β-ol, 5α-Stigmast-22-en-3β-ol und 5α-Stigmastan-3β-ol und ihren 24-Epimeren (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 1101-1110 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Synthesis of 5α-Stigmasta-22,25-dien-3β-ol, 5α-Stigmast-22-en-3β-ol und 5α-Stigmastan-3β-ol and their 24-EpimersThe synthesis of the title compounds from butynylcarbinols 5 with 1-dimethylamino-1-methoxy-1-propene in a Claisen rearrangement via the amides 7 is described. An effective preparation of the starting materials is given and the data of the products are compared with those from natural sterols.
    Notes: Die Synthese der Titelverbindungen aus den Butinylcarbinolen 5 mit 1-Dimethylamino-1-methoxy-1-propen in einer Claisen-Umlagerung über die Amide 7 wird beschrieben. Eine effektive Darstellung der Ausgangsverbindungen wird angegeben, und die Daten der Produkte werden mit den aus Naturstoffen gewonnenen verglichen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751080415
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Anwendungen der Phasentransfer-Katalyse. Extraktion von Halogenwasserstoffen und Wasserstoffperoxid in unpolare Medien (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 2765-2768 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Applications of Phase Transfer Catalysis. Extraction of Hydrogen Halides and Hydrogen Peroxide into Nonpolar MediaAttention is drawn to a process designated “extraction by hydrogen bonding”: Compounds like HX or HOOH are extracted by quaternary ammonium salts into nonpolar media in form of ion pairs [NR4+HX2] or [NR4+X-⃛ HOOH]. Factors involved in these processes are investigated.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120747
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Stabile Pyrazolium-Betaine durch Addition von 1,1-Dialkylhydrazinen an Acetylencarbonsäureester (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 87 (1975), S. 551-551 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19750871516
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Hydroxy-alkylierung von Carbonsäure-dialkylamiden mit Epoxiden (1971)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 934-935 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.1971083221175
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Enhydrazine, 61) Weitere Enhydrazone, Tetrahydroindazolone und Enhydrazine aus cyclischen β-Dicarbonylverbindungen (1973)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 450-459 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enehydrazines, 61) Further Enehydrazones, Tetrahydroindazolones and Enehydrazines from Cyclic β-Dicarbonyl CompoundsDimedone, 1,3-cyclohexanedione, and 2-methyl-1,3-cyclopentanedione react with benzaldehyde alkylhydrazones to give further enehydrazones (4e, f, 5a-e, 17b-e). Some of the enehydrdzones are hydrogenated to enehydrazines (19a, b, 20b, c). Additionally, the preparation of further tetrahydroindazolones (6e, f, 7a-f, 9, 10, 13, 15) from dimedone and 1,3 cyclohexanedione is described.
    Notes: Aus Dimedon, 1,3-Cyclohexandion und 2-Methyl-1,3-cyclopentandion werden mit Benzaldehyd-alkylhydrazonen weitere Enhydrazone (4e, f, 5a-e, 17b-e) erhalten, die z. T. zu Enhydrazinen (19a, b, 20b, c) hydriert werden. Ferner wird die Darstellung weiterer Tetrahydroindazolone (6e, f, 7a-f, 9, 10, 13, 15) aus Dimedon und 1,3-Cyclohexandion beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19731060211
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Enhydrazine, 8. Einige neue Indazol-Derivate (1973)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 3432-3437 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enehydrazines,8. Some New Indazole DerivativesThe formerly described 4,5,6,7-tetrahydro-1H-4-indazolones 1a, b and 4 are reduced to the carbinols 2a, b and 5 and these are dehydrated to the 6,7-dihydro-1H-indazoles 3a, b and 6. Hydrogenation of 3a, b leads to the 4,5,6,7-tetrahydro-1H-indazoles 7a, b. Dehydrogenation of 2a, b and 1 a, b gives the 1H-indazoles 8a, b and 9a, b respectively.
    Notes: Die früher beschriebenen 4,5,6,7-Tetrahydro-1H-4-iadazolone 1 a, b und 4 werden zu den Carbinolen 2a, b und 5 reduziert und diese zu den 6,7-Dihydro-1H-indazolen 3a, b und 6 dehydriert Hydrierung von 3a, b führt zu den 4,5 6,7-Tetrahydro-1H-indazolen 7a, b. Durch Dehydrierung erhält man die 1H-Indazole 8a, b aus 2a, b und 9a, b aus 1a, b.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19731061027
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Enhydrazine, 16. Stabile Borane aus Enhydrazonen (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 2818-2833 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enehydrazines, 16. Stable Boranes from EnehydrazonesThe hydroboration of the enehydrazones 1a-d, 9 and 11 leads to the stable boranes 2a-d, 10, and 12, the qualities and structures of which are investigated.
    Notes: Die Hydroborierung der Enhydrazone 1a-d, 9 und 11 führt zu den stabilen Boranen 2a-d, 10 und 12, deren Eigenschaften und Struktur untersucht werden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100818
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...