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Paper | Regular issue | Vol 60, No. 2, 2003, pp.351 -363
Published online, 9th December, 2002
DOI: 10.3987/COM-02-9656
A New Synthetic Method for Substituted 2,4-Dihydro-3H-1,2,4-triazol-3-ones and 3-thiones via 1,4-Dialkyl-5-phenylthio-1H-1,2,4-triazolium Salts

Ikuo Kawasaki, Akane Domen, Shin-ya Kataoka, Kazuya Yamauchi, Masayuki Yamashita, and Shunsaku Ohta*

*Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan


Novel 2,4-di- and 2,4,5-trialkyl-2,4-dihydro-3H-1,2,4-triazol-3-ones and 2,4-dialkyl-2,4-dihydro-3H-1,2,4-triazole-3-thiones were prepared by the reaction of 1,4-dialkyl-5-phenylthio-1,2,4-triazolium salts with aqueous potassium carbonate or sodium sulfide in DMF, respectively.