Abstract
A novel method for oxazine ring formation is established using the reaction of ammonium thiocyanate and acid chlorides with napthols in the presence of N-methylimidazole to afford [1,3]oxazine-4-thione derivatives in excellent yields.
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References
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Financial support of this work from the Research Council of Qaemshahr Azad University is gratefully acknowledged.
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Khalilzadeh, M.A., Yavari, I., Hossaini, Z. et al. N-Methylimidazole-promoted efficient synthesis of 1,3-oxazine-4-thiones under solvent-free conditions. Monatsh Chem 140, 467–471 (2009). https://doi.org/10.1007/s00706-008-0042-1
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DOI: https://doi.org/10.1007/s00706-008-0042-1