Heterocycles p. 147 - 157 (1999)
Update date:2022-08-17
Topics:
Kim, Kil Joong
Kim, Kyongtae
Treatment of alkyl methyl ketoximes with tetrasulfur tetranitride antimony pentachloride complex (S4N4·SbCl5) in aromatic solvents such as benzene and toluene at 60 °C led to the regioselective formation of 3-alkyl- 4-methyl-1,2,5-thiadiazoles in low yields, whereas the reactions of alkyl aryl ketoximes under the same conditions gave exclusively N-arylalkanamides in good yields. A mechanism is proposed for the formation of 3-alkyl-4- methyl-1,2,5-thiadiazoles.
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