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New π-electron analogs of azulene

II. 1,2,3-tricarbalkoxycyclopenta[b]-1,4-benzothiazines

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Condensation of o-aminothiophenol with 2-hydroxy-3,4,5-tricarbalkoxycyclopentadienones gave 3a, 9-dihydro-3a-hydroxy-1,2,3-tricarbalkoxycyclopenta[b]-1,4-benzothiazines, which undergo dehydration to give 1,2,3-tricarbalkoxycyclopenta[b]-1,4-benzothiazines. The latter were characterized as π-electron analogs of azulene on the basis of their electronic and PMR spectra and quantum-chemical calculations.

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Authors and Affiliations

  1. All-Union Scientific-Research and Planning and Design Institute of Petrochemistry, Kiev

    N. V. Sumlivenko, É. A. Ponomareva, G. G. Dyadyusha & G. F. Dvorko

Authors
  1. N. V. Sumlivenko
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  2. É. A. Ponomareva
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  3. G. G. Dyadyusha
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  4. G. F. Dvorko
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Additional information

See [7] for communication I.

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1078–1083, August, 1975.

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Sumlivenko, N.V., Ponomareva, É.A., Dyadyusha, G.G. et al. New π-electron analogs of azulene. Chem Heterocycl Compd 11, 941–945 (1975). https://doi.org/10.1007/BF00470495

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  • DOI: https://doi.org/10.1007/BF00470495

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