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  • 1,2-Dihydro-1,3,2λ5,4λ5-diazadiphosphete  (1)
  • Bicyclo[3.2.1]octanes, stereoselective syntheses of  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Carbonylierende Ringerweiterung, 4. Diastereoselektive Synthesen von Bicyclo[3.2.1]oct-3-en-2,8-dionen durch doppelte Carbonylierung von (R)-(-)-α-Phellandren (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 1079-1087 
    Details
    ISSN: 0009-2940
    Keywords: Ring enlargement ; Phellandrene ; Carbonylation ; Bicyclo[3.2.1]octanes, stereoselective syntheses of ; Iron complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Carbonylating Ring Enlargement, 41). - Diastereoselective Syntheses of Bicyclo[3.2.l]oct-3-ene-2,8-diones by Double Carbonylation of (It)-(-)-α-PhellandreneIn order to clarify the stereochemistry of the carbonylating ring enlargement of cyclohexadiene complexes 1 to complexed seven-membered ring ketones 2 and the further carbonylation to bicyclo[3.2.1]oct-3-ene-2,8-diones 3 the exo and endo isomers of (R)-(-)-α-phellandrene complex 7 were synthesized in pure form and in various isomeric ratios and converted. The optically active ring-enlargement products 11 and 12 obtained therefrom, as well as the enantiomerically pure bicyclooctenes 20-22, implicate a stereospecific reaction course under retention of the configuration predetermined by the starting material 6 and its complexes 7. This was confirmed by an X-ray determination of the absolute configuration of exo-12. Thus, the method is suitable for the diastereoselective synthesis of bicyclo[3.2.1]oct-3-ene-2,8-diones 3 from 1,3-cyclohexadiene complexes 1.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901230522
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  • 2
    Electronic Resource
    Electronic Resource
    1,2-Dihydro-1,3,2λ5,4λ5-diazadiphosphet - Synthese, Struktur und Isomerisierung zum „inneren Salz“ von 1,3,2,4λ5-Diazadiphosphetan-2-iumhydroxid* (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2631-2634 
    Details
    ISSN: 0009-2940
    Keywords: 1,2-Dihydro-1,3,2λ5,4λ5-diazadiphosphete ; Isomerization ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,2-Dihydro-1,3,2λ5,4λ5-diazadiphosphete - Synthesis, Structure and Isomerization to the „Inner Salt“ of 1,3,2,4λ5-Diazadiphosphetan-2-ium HydroxideThe photochemical reaction of the azidophosphane (iPr2N)2PN3 (1) with the tetraazaphospholene (3) and the bis(imino)phosphorane (Me3Si)2NP(=NSiMe3)2 (6) proceeds by elimination of N2 to yield (5) and by 1,3-silyl group shift to furnish (8) the structures of which were determined by means of NMR data and, in the case of 5, additionally by X-ray structure analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921251202
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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