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    National Tsing Hua University Institutional Repository > 歷任校長 > 劉兆玄 (1987-1993) > 期刊論文 >  Cycloaddition Reactions of Tetrafluorodisilacyclobutene with Conjugated Diene Mediated by Metal Carbonyls, 4. Stereoselective 1,4-addition and Conformations of 1,4-Disilacyclocta-2,6-diene


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81095


    Title: Cycloaddition Reactions of Tetrafluorodisilacyclobutene with Conjugated Diene Mediated by Metal Carbonyls, 4. Stereoselective 1,4-addition and Conformations of 1,4-Disilacyclocta-2,6-diene
    Authors: Jzang, T. T.;Lee, C. Y.;Liu, C. S.
    教師: 劉兆玄
    Date: 1988
    Publisher: American Chemical Society
    Relation: ORGANOMETALLICS, American Chemical Society, Volume 7, Issue 6, June 1988, Pages 1265–1270
    Keywords: Carbonyls
    1,4-Disilacyclocta-2,6-diene
    Cycloaddition
    Tetrafluorodisilacyclobutene
    Abstract: Cycloaddition reactions between 3-tert-butyl-1,1,2,2-tetrafluoro-1,2-disilacyclobute(1ne) and various conjugated dienes mediated by Ni(C0)4 have been studied. The reactions proceed via a (q4-diene)disilametallacycle intermediate that decomposes to result in the stereoselective 1,4-addition products, 1,4- disilacycloocta-2,6-dienes. Variable-temperature l9F NMR study of one derivative of the 1,4-disilacycloocta- 2,6-dienes (2i) shows that it exists in a chair form in solution. Compound 2i undergoes chair to chair interconversion, with free energy of activation, AG* = 10.5 f 0.1 kcal/mol.
    Relation Link: http://pubs.acs.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/81095
    Appears in Collections:[劉兆玄 (1987-1993)] 期刊論文
    [化學系] 期刊論文

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