Abstract
A one-pot synthesis of alkyl 3,4-dihydro-4-oxo-2H-1,3-thiazine-6-carboxylates from dialkyl acetylenedicarboxylates and N,N′-dialkylthioureas in the presence of triphenylphosphine (20 mol%) is described.
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Yavari, I., Nematpour, M. & Hossaini, Z. Ph3P-mediated one-pot synthesis of functionalized 3,4-dihydro-2H-1,3-thiazines from N,N′-dialkylthioureas and activated acetylenes in water. Monatsh Chem 141, 229–232 (2010). https://doi.org/10.1007/s00706-009-0247-y
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DOI: https://doi.org/10.1007/s00706-009-0247-y