ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis of 1,2,4-Triazolin-5-ones from S-Allyl N-Acylmonothiocarbamates

P. Kutschy, M. Dzurilla, and V. Ficeri

Department of Organic Chemistry, Faculty of Natural Sciences, P. J. Šafárik University, CS-041 67 Košice

Abstract: Reaction of S-allyl N-acylmonothiocarbamates with phenylhydrazine in boiling benzene in the presence of catalytic amount of triethylamine afforded 1-substituted 4-acylsemicarbazides in good yields (40-80 %). These compounds cyclized by the action of 2 M-NaOH solution to 3-substituted 2-phenyl-1,2,4-triazolin-5-ones. The structure of the prepared compounds was confirmed by elemental analysis, IR, ¹H  NMR, and mass spectroscopy.

Full paper in Portable Document Format: 471a64.pdf

Chemical Papers 47 (1) 64–66 (1993)