Chemistry of Heterocyclic Compounds

, Volume 44, Issue 4, pp 494–497 | Cite as

Cyclocondensation of N-prop-2-ynyl-and N-pentadiynyl-o-phenylenediamines with phenyl isothiocyanate



Cyclocondensation of N-prop-2-ynyl-o-phenylenediamine with phenyl isothiocyanate leads to the formation of 1-(3-arylprop-2-ynyl)-2,3-dihydro-1H-benzimidazole-2-thiones. In the reactions of diacetylene derivatives — N-penta-2,4-diynyl-o-phenylenediamine — with phenyl isothiocyanate the formation of two heterocyclic nuclei occurs simultaneously to form [1,3]thiazolidino[3,2-a]benzimidazoles.


1-(3-arylprop-2-ynyl)-2,3-dihydro-1H-benzimidazol-2-thiones N-penta-2,4-diynyl-o-phenylenediamine phenyl isothiocyanate N-prop-2-ynyl-o-phenylenediamines [1,3]thiazolidino[3,2]benzimidazoles cyclocondensation 


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Copyright information

© Springer Science+Business Media, Inc. 2008

Authors and Affiliations

  • R. V. Novikov
    • 1
  • M. E. Borovitov
    • 1
  • I. A. Balova
    • 1
  1. 1.Chemistry FacultySt. Petersburg State UniversitySt. PetersburgRussia

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