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  • Artikel: DFG Deutsche Nationallizenzen  (4)
  • Digitale Medien  (4)
  • 125Te NMR  (1)
  • 2-Telluroimidazolines  (1)
  • 5H-Dibenzo[b,f]azepine  (1)
  • 9(10H)-Acridinone  (1)
  • Active centers  (1)
Datenquelle
  • Artikel: DFG Deutsche Nationallizenzen  (4)
Materialart
  • Digitale Medien  (4)
Erscheinungszeitraum
  • 1
    ISSN: 1434-4475
    Schlagwort(e): 5H-Dibenzo[b,f]azepine ; Alkynylation ; Phase-transfer catalysis ; X-ray diffraction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The synthesis of 11-isopropyliden-1a,10b-dihydro-1H-1,6-methano-dibenzo[b,f]cyclopropa[d]azepine by phase-transfer catalysed reaction of 5H-dibenzo[b, f]azepine with 2-chloro-2-methyl-3-butyne is described. The structure is confirmed by X-ray diffraction.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1434-4475
    Schlagwort(e): 9(10H)-Acridinone ; Alkylation ; Phase-transfercatalysis ; Prototropic rearrangement ; X-Ray
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: 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.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 2047-2049 
    ISSN: 0009-2940
    Schlagwort(e): 2-Telluroimidazolines ; 125Te NMR ; Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: 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).
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 30 (1991), S. 769-788 
    ISSN: 0570-0833
    Schlagwort(e): Thiols ; Bioinorganic chemistry ; Active centers ; Chemistry ; General Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Thiolates are presently a subject of great interest in the chemistry of complexes involving transition-metal elements and soft ligands. The manifold electronic and steric capabilities offered by the monodentate ligands RS⊖ and the bidentate chelate ligands ⊖SRS⊖ have been used to stabilize a broad spectrum of mononuclear, oligomeric, and polymeric complexes with new and remarkable structures and properties. Impetus has especially been provided by the synthesis of polynuclear cagelike homo- and heteroleptic metal-sulfur frameworks, which can often be regarded as “molecular fragments” of the structures of inorganic sulfides. Thiolates and mixed sulfide-thiolates of the late open- and closed-shell 3d metals (Fe, Co, Ni, Cu, Zn) and some of their homologues (Au, Cd, Hg), as well as of Mo, are of particular importance as model complexes for biologically important metal centers coordinated by sulfur. They have played an important role in increasing our understanding of the structure, bonding, and function of the reactive centers in ferredoxins, rubredoxins, nitrogenases, blue copper proteins, metallothioneins, and antiarthritic drugs.
    Zusätzliches Material: 41 Ill.
    Materialart: Digitale Medien
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