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  • 1
    Electronic Resource
    Electronic Resource
    A BONBON 6-membered ring heterocycle (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. o943-o944 
    Details
    ISSN: 1600-5368
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: 2,5-Dimethyl-3,3,6,6-tetraphenyl-1,4-dioxa-2,5-diazonia-3,6-diboratacyclohexane, C26H28B2N2O2, occupies a crystallographic inversion centre, and contains a six-membered BONBON heterocyclic ring, with a chair conformation and dative B—N bonds of length 1.640 (1) Å.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S1600536801014866
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ring-Ketten-Isomerie bei N-(3-Hydroxyalkyl)nitronen, I C-Aryl-N-(3-hydroxypropyl)nitrone (1983)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 1937-1949 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ring-Chain Isomerism of N-(3-Hydroxyalkyl)nitrones, I. - C-Aryl-N-(3-hydroxypropyl)nitronesN-(3-Hydroxypropyl) nitrones 5 are prepared from 3-(hydroxyamino) propanol 3 and aromatic aldehydes. The isomerism between the open-chain nitrone form 5 and the cyclic perhydro-1,3-oxazine form 6 is proved by formation of diphenylboron chelates 4 and N-acyloxy-perhydro-1,3-oxazines 10, respectively.
    Notes: Aus 3-(Hydroxyamino)propanol 3 und aromatischen Aldehyden werden N-(3-Hydroxypropyl)-nitrone 5 dargestellt. Die Isomerie zwischen offenkettiger Nitron-Form 5 und cyclischer Perhydro-1,3-oxazin-Form 6 wird durch Bildung von Diphenylborchelaten 4 bzw. N-Acyloxy-perhydro-1,3-oxazinen 10 nachgewiesen.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198319831109
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  • 3
    Electronic Resource
    Electronic Resource
    Ein Methanoditetrazolo-[1,3,6,8]tetrazecin aus 5-(Chlormethyl)tetrazol und Hexamethylentetramin (1989)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1989 (1989), S. 689-690 
    Details
    ISSN: 0170-2041
    Keywords: Methanoditetrazolo-[1,3,6,8]tetrazecine ; Hexamethylenetetramine ; Tetrazole, 5-(chloromethyl)- ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Methanoditetrazolo-[1,3,6,8]tetrazecine from 5-(Chloro-methyl)tetrazole and HexamethylenetetramineIn contrast to N-substituted 5-(chloromethyl)tetrazoles (1; R=alkyl, aryl), the parent compound 1 (R=H) reacts with hexamethylenetetramine to give the methanoditetrazolo-[1,3,6,8]tetrazecine 4, a rather unusual system. This compound which is also produced on reaction of 7 with formaldehyde occurs in the (6RS,13RS) form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198919890214
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  • 4
    Electronic Resource
    Electronic Resource
    Dimroth-Umlagerung von Iminen des 1,5-Diaminotetrazols (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 1575-1578 
    Details
    ISSN: 0009-2940
    Keywords: 5-Tetrazolamines, 1-(methylenamino)- ; Dimroth rearrangement ; (5-Tetrazolyl)hydrazones ; Cyanohydrazones, reaction with hydrogen azide ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dimroth Rearrangement of Imines Derived from 1,5-DiaminotetrazoleHeating the imines 1 in dimethyl sulfoxide (or partly in xylene) provides hydrazones such as 2. The reaction is greatly favoured by electron-withdrawing groups attached to the imine carbon atom.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901230719
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