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  • 1990-1994  (4)
  • 1970-1974
  • 1955-1959
  • 1990  (4)
Material
Years
  • 1990-1994  (4)
  • 1970-1974
  • 1955-1959
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 29 (1990), S. 538-541 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 29 (1990), S. 3845-3849 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 1981-1982 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Alkali Metal Complexes of Heterocyclic Compounds with Dihalogen (diorganylamino)boranesThe reaction of benzothiazole and 2-methyl-benzothiazole resp. with sodium/potassium-alloy and dihalogen(diorganylamino)boranes yields the 2,3-dihydro-benzo[b]-1,3,2-thiazaboroles 1, 3, 4, 7, and 10 beside the bis(diorganylamino)cyanoboranes A, 5 and 8. Benzoxazole- and 2-methylbenzoxazole resp. under similar reaction condition form the diisopropylamino(diphenoxy)borane B, the cyanoborane 5 and the 1,3,5-dioxaza-2,4-dibora-2,3,4,5-tetrahydrobenzo[b]borepine 17. By-products of these reactions are the 1,2,3,4-tetrahydro- and the 1,4-dihydrobenzo[b]-1,3,4-ox(resp. thi) aza-borines 2, 9, 11-13, 16 and 6, 14, 15, which could be identified by mass spectrometry. Reaction of benzothiazole and benzoxazole resp. with n-butyl-lithium and subsequent addition of dichlorodiisopropylaminoborane yields the 2,3-dihydro-benzo[b]-1,3,2-thiazaborole derivatives 18 and 19.Hydrolysis of 3 by aqueous NaOH gives o-aminothiophenole and bis(o-aminophenyl)disulfide C, while from 18 o-nonyl(5)aminothiophenole 20 and bis(o-nonyl(5)amino-phenyl)disulfide 21 are obtained, and B gives phenole. 17 is resistant to hydrolytic attack by 30% aqueous NaOH. The compounds are characterized analytically and spectroscopically (MS; NMR: 1H, 11B, 13C; IR).
    Notes: Bei der Reaktion von Benzothiazol bzw. 2-Methyl-benzothiazol mit Natrium/Kalium-Legierung und Dihalogen(diorganylamino)boranen erhält man die 2,3-Dihydrobenzo[b]-1,3,2-thiazaborole 1, 3, 4, 7 und 10 neben den Bis(diorganylamino)cyanoboranen A, 5 und 8. Benzoxazol ergibt unter vergleichbaren Reaktionsbedingungen Diisopropylamino(diphenoxy) boran B und das Cyanoboran 5, 2-Methylbenzoxazol das 1,3,5-Dioxaza-2,4-dibora-2,3,4,5-tetrahydrobenzo[b]borepin 17. Als Nebenprodukte dieser Umsetzungen wurden durch MS auch die 1,2,3,4-Tetrahydro- und die 1,4-Dihydrobenzo[b]-1,3,4-ox- bzw. thiazaborine 2, 9, 11, 12, 13, 16 bzw. 6, 14, 15 nachgewiesen. Die Reaktion von Benzothiazol bzw. Benzoxazol mit n-BuLi und anschließende Umsetzung mit Dichlor(diisopropylamino)boran ergibt die 2,3-Dihydrobenzo[b]-1,3,2-thiazaborole 18 und 19. Hydrolyse durch wäßrige NaOH ergibt für 3 o-Aminothiophenol und Bis(o-aminophenyl)disulfid C, für 18 das o-Nonyl(5)aminothiophenol 20 und Bis(o-nonyl(5)aminophenyl)disulfid 21 und für B Phenol. 17 konnte durch Kochen mit 30% NaOH nicht hydrolysiert werden. Die Verbindungen wurden analytisch und spektroskopisch (MS; NMR: 1H, 11B, 13C; IR) charakterisiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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