- Oxidative Alkylation of Azoles. III. Reaction of N-Chloro-1,2,4-triazole with Methyl Iodide
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Reaction of 1-chloro-1,2,4-triazole with methyl iodide in methylene chloride or chloroform at 20-40 deg C results in formation of products of mono- and dialkylation of the ring at positions 1 and 4.Under the same conditions, the 1,4-dimethyltriazolium salt gives rise to 5-iodo derivative.
- Kurenkov, A. A.,Pevzner, M. S.
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p. 1118 - 1121
(2007/10/03)
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- OXIDATIVE ALKYLATION OF AZOLES. I. REACTION OF N-CHLORO-3-NITRO-TRIAZOLES WITH METHYL IODIDE
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The reaction of methyl iodide with N-chloro-3-nitro-, and N-chloro-5-methyl-3-nitro-1,2,4-triazoles leads to the release of iodine and the formation of a mixture of compounds containing 3-nitro-1,2,4-triazoles unsubstituted at the nitrogen, the N-mono- and N,N-dimethylated derivatives (triazolium salts), and the products from their further transformations (1,4-dimethyl-5-triazolones).
- Pevzner, M. S.,Kurenkov, A. A.,Trubitsin, A. E.
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p. 1470 - 1475
(2007/10/02)
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- Preparation and 13C NMR Spectra of Some Azolones, Azolothiones and Their Methoxy and Methylmercapto Relatives
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13C NMR chemical shifts are reported for the title compounds.The use of these data for investigating potential equilibria between azolones and azolothiones on the one hand and methoxy and methylmercaptoazoles on the other, is discussed.It is concluded that only qualitatively reliable estimates of the position of equilibrium are available.
- Bojarska-Olejnik, Elzbieta,Stefaniak, Lech,Witanowski, Michal,Webb, Graham A.
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p. 295 - 303
(2007/10/02)
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