Direction of isomerization of 5-hydroxy-3-propargylthio-1,2,4-triazines according to 1H/15N heteronuclear multiple bond correlation (HMBC) spectra |
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| Authors: | V Yu Smutin V A Gindin N O Sablina |
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| Institution: | (1) Scientific-Research Institute of Chemistry, St. Petersburg State University, Petrodvorets, St. Petersburg, 198504, Russia |
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| Abstract: | We have studied isomerization of 6-substituted 5-hydroxy-3-propargylthio-1,2,4-triazines using base catalysis. We have used
NMR correlation spectroscopy (1H/15N HMBC spectra) to prove the structure of the regioisomer formed. The type of regioisomer formed (3,6-dimethylthiazolo3,2-b]-1,2,4-triazin-7-one)
allows us to say that isomerization occurs as a direct propynyl rearrangement.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 453–457, March, 2006. |
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| Keywords: | 5-hydroxy-3-propargyl-1 2 4-triazine 3-methyl-7H-thiazolo[3 2-b]-1 2 4-triazin-7-ones rearrangement regioisomer 1H/15N HMBC spectra |
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