Investigation in the series of condensed heteroaromatic systems including a thiophene ring

Communication 20. Metallation of benzo-[b]-naphtho-[2,3-d]-thiophene and desulfurization of its alkyl derivatives
  • V. P. Litvinov
  • D. D. Gverdtsiteli
  • E. D. Lubuzh
Physical Chemistry


  1. 1.

    Under the action of n-butyllithium on benzo-[b]-naphtho-[2, 3-d]-thiophene (I), the lithium atom is inserted in the 4-position of the benzonaphthothiophene system.

  2. 2.

    In the desulfurization of 4- and 7-alkyl derivatives of benzonaphthothiophene (I) by Raney nickel, together with desulfurization there is a partial hydrogenation of the alkyl derivatives ofβ-phenylnaphthalene formed.

  3. 3.

    On the basis of a comparative study of the IR spectra of 4- and 7-alkyl derivatives of benzonaphthothiophene (I) and alkyl derivatives of naphthalenes, general principles in the vibrational spectra of these systems were found, which permitted a reliable confirmation of the position of the substituent in 4- and 7-alkyl derivatives of (I).



Hydrogenation Nickel Lithium Naphthalene Thiophene 
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Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • V. P. Litvinov
    • 1
  • D. D. Gverdtsiteli
    • 1
  • E. D. Lubuzh
    • 1
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of Sciences of the USSRUSSR

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