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Wiley-VCH Verlag, ChemInform, 29(37), 2006

DOI: 10.1002/chin.200629117

Elsevier, Heterocycles, 2(67), p. 749

DOI: 10.3987/com-05-s(t)77

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Synthesis of 5-Selenoxo-1,2,4-triazole-1-carboxylates from Isoselenocyanates and Azodicarboxylates

Journal article published in 2006 by Geoffroy L. Sommen, Francesco Favero ORCID, Sommen Gl, Heinz Heimgartner, Geoffroy L. Sommen, Anthony Linden
This paper is available in a repository.
This paper is available in a repository.

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Abstract

A mixt. of an azodicarboxylate and triphenylphosphine in dichloromethane reacted with aryl isoselenocyanates at room temp. to give 4,5-dihydro-5-selenoxo-1H-1,2,4-triazole-1-carboxylates in a one-pot reaction in good to excellent yields. The isoselenocyanates were prepd. conveniently from formamides by treatment with elemental selenium and phosgene according to Barton's procedure. The crystal structure of Et 3-ethoxy-4-(4-tolyl)-4,5-dihydro-5-selenoxo-1H-1,2,4-triazole-1-carboxylate is presented [monoclinic, space group C2/c, a 11.2907(3), b 20.2786(6), c 14.3222(3) .ANG., beta 112.352(2) Deg, V 3032.8(1) .ANG.3, Z 8]. [on SciFinder (R)]