The possibility of intramolecular nucleophilic aromatic substitution of hydrogen in the series of 5-[2-(het)aryl-1-benzothiophen-3-yl]-pyrimidines was explored. A convenient method for the synthesis of [1]benzothieno-[3,2-f]thieno[2,3-h]quinazoline and [1]benzothieno-[3,2-f]thieno[3,2-h]quinazoline based on the developed SN H protocol was proposed. The energy parameters (width of the band gap, the energy of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbitals (LUMO)) of benzothieno[3,2-f]-thieno[2,3-h]quinazoline synthesized for the first time were determined based on the data of the absorption spectra and cyclic voltammetry.
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The work was supported by the grant of the Russian Science Foundation (project no 16-13-10435).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2017, 53(10), 1156–1160
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Verbitskiy, E.V., Dinastiya, E.M., Baranova, A.A. et al. Synthesis of dithienoquinazolines from pyrimidines via intramolecular nucleophilic aromatic substitution of hydrogen. Chem Heterocycl Comp 53, 1156–1160 (2017). https://doi.org/10.1007/s10593-017-2188-4
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DOI: https://doi.org/10.1007/s10593-017-2188-4