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  • 1945-1949  (10)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Frequency Factors in Radical Reactions (1949)
    [s.l.] : Nature Publishing Group
    Nature 163 (1949), S. 256-256 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE frequency factors and activation energies for reactions in the polymerization of styrene and vinyl acetate have been determined in these Laboratories1. By combining the values for chain propagation with the results of Lewis, Mayo, Walling and their ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/163256a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Photosensitization by Vat Dyes (1949)
    [s.l.] : Nature Publishing Group
    Nature 163 (1949), S. 214-214 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is well known that cellulose fabrics dyed with certain vat dyes disintegrate on exposure to light1. The experimental evidence suggests that a photosensitized oxidation of the cellulose is responsible. It is known that dyes do, in fact, photosensitize a number of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/163214a0
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  • 3
    Electronic Resource
    Electronic Resource
    Absolute Velocity Constants in the Autoxidation of Tetralin (1949)
    [s.l.] : Nature Publishing Group
    Nature 163 (1949), S. 215-215 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE main features of the autoxidation of unsaturated hydrocarbons have been established by Bolland and Gee1. The autoxidation of tetralin probably follows a similar course, although the published work2 is open to criticism. If the kinetic scheme of Bolland and Gee ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/163215a0
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  • 4
    Electronic Resource
    Electronic Resource
    Structure of Colchicine (1945)
    [s.l.] : Nature Publishing Group
    Nature 155 (1945), S. 141-142 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN view of the remarkable physiological properties of colchicine its chemical nature is of some interest. Until recently, the structure (I) proposed by Windaus1 has been generally accepted, although the stability of colchicine did not suggest a 9-amino-9: 10-di-hydrophenanthrene ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/155141d0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Mechanism of the Benzidine and Related Rearrangements (1945)
    [s.l.] : Nature Publishing Group
    Nature 156 (1945), S. 784-784 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two electronic theories have been proposed for the benzidine rearrangement1,2, but both are open to criticism. The present theory is an elaboration of the Robinson2 mechanism in terms of the quantum theory3 of aromatic structure. It is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/156784a0
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  • 6
    Electronic Resource
    Electronic Resource
    Mechanism of the Beckmann Rearrangement (1945)
    [s.l.] : Nature Publishing Group
    Nature 156 (1945), S. 688-689 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HIGMAN1 recently suggested a new mechanism for the Beckmann rearrangement which postulates that the cation (I) rearranges by rotation of the central 〉 C = N 〈 unit through 90° to form (II). This suggestion, though ingenious, is not in accordance with the known facts. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/156688b0
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  • 7
    Electronic Resource
    Electronic Resource
    [Letters to Editor] (1945)
    [s.l.] : Nature Publishing Group
    Nature 155 (1945), S. 479-479 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MY communication on this subject was written in ignorance of the work of Barton, Cook and Loudon, which was partly disclosed at a meeting of the Chemical Society, but is still unpublished. In relation to the facts known when I wrote, my remarks on the nature of ring B in colchicine can scarcely ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/155479b0
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of Stipitatic Acid (1945)
    [s.l.] : Nature Publishing Group
    Nature 155 (1945), S. 50-51 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Birkinshaw, Chambers and Raistrick1 have described stipitatic acid, a metabolite of the mould Penicillium stipitatum, to which, after lengthy examination, they could ascribe no reasonable structure. The evidence they give, however, does seem to indicate a unique structure for the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/155050b0
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  • 9
    Electronic Resource
    Electronic Resource
    Polymerization of Methyl Methacrylate (1946)
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 380-381 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a general survey of the polymerization of vinyl compounds using the method previously described1, we have studied methyl methacrylate, and have found that it presents features of some interest. Determination of the spontaneous rate of polymerization is difficult since ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/158380c0
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  • 10
    Electronic Resource
    Electronic Resource
    Determination of the Velocity Constants in the Polymerization of Vinyl Compounds (1946)
    [s.l.] : Nature Publishing Group
    Nature 157 (1946), S. 845-845 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE accepted mechanism for the polymerization of vinyl compounds involves four velocity constants: initiation (k1), chain propagation (k2), chain transfer (k3), and termination (k4). It is well known that standard methods of investigation give only ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/157845a0
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