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  • 1
    ISSN: 1434-4475
    Keywords: 9(10H)-Acridinone ; Alkylation ; Phase-transfercatalysis ; Prototropic rearrangement ; X-Ray
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Reaction of 9(10H)-acridinone (2) with 3-chloro-3-phenyl-1-propyne under PTC conditions affords 1-methyl-2-phenyl-6H-pyrrolo[3,2,1-de]acridin-6-one (1 b), 10-(2-chloro-1-methyl-2-phenyl-ethenyl)-9(10H)-acridinone (4), 10-(3-phenyl-1-propynyl)-9(10H)-acridinone (7), and 10-(4-methylene-2,3-diphenyl-2-cyclobuteneylidenemethyl)-9(10H)-acridinone (5). The structure of the last compound which crystallizes in the triclinic system with the space group $$P\bar 1$$ , was confirmed by X-ray diffraction. Under the same conditions 10-(3-phenyl-2-propynyl)-9(10H)-acridinone (3) and 10-(3-phenyl-1-propynyl)-9(10H)-acridinone (6) were obtained from 9(10H)-acridinone (2) and 3-bromo-1-phenyl-1-propyne.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 2047-2049 
    ISSN: 0009-2940
    Keywords: 2-Telluroimidazolines ; 125Te NMR ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Imidazole Chemistry, III[1].  -  2-Telluroimidazolines  -  Stable Tellurocarbonyl Compounds2-Telluroimidazolines 6 are obtained as stable solids from the imidazol-2-ylidenes 4 and tellurium in good yields. The X-ray structure of 6c reveals the relevance of the mesomeric structure 5 [d(C1 - Te) = 2.087(4) Å] which is confirmed by the upfield shift in the 125Te NMR spectra (dL 〈  - 150).
    Type of Medium: Electronic Resource
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