- Diels-Alder Reactions of 1,2,4-Triazines. Synthesis of Thienopyridines and 3,4-Dihydro-2H-thiopyranopyridines from 6-(Alkynylthio)-1,2,4-triazines
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Intramolecular Diels-Alder reactions of 6-(alkynylthio)-1,2,4-triazines are shown to give 2,3-dihydrothienopyridines and 3,4-dihydro-2H-thiopyranopyridines. 1-Oxo-2,3-dihydrothienopyridines synthesized in this fashion from the corresp
- Taylor, Edward C.,Macor, John E.
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p. 4984 - 4989
(2007/10/02)
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- NOVEL INTRAMOLECULAR DIELS-ALDER REACTIONS WITH ALKYNYLTHIO DERIVATIVES OF 1,2,4-TRIAZINES. NEW ROUTES TO THIENOPYRIDINES AND THIENOPYRIDINES
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S-Alkylation of 1,2,4-triazine-6-thiones with 4-iodobutyne, followed by oxidation to the sulfoxide and intramolecular cycloaddition (at room temperature), gives 2,3-dihydrothienopyridines, which are readily dehydrated with acetic anhydride to thien
- Taylor, Edward C.,Macor, John E.
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p. 2419 - 2422
(2007/10/02)
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