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Silver(I)-catalyzed sequential hydroamination and Prins type cyclization for the synthesis of fused benzo--sultams

An intramolecular annulation strategy has been developed for the synthesis of tetrahydrobenzo[e]pyrano[4,3-c][1,2]thiazine derivatives by means of coupling of aldehydes with 2-(4-hydroxybut-1-yn-1-yl)-N-arylsulfonamides using a catalytic amount of silver hexafluoroantimonate in toluene at 80 °C. This is the first r Synthetic methodology in OBC

Authors:   B. Maheshwar Rao; J. S. Yadav; B. Sridhar; B. V. Subba Reddy
Journal:   Organic & Biomolecular Chemistry
DOI:   10.1039/C8OB00918J
Facts, background information, dossiers
  • Cyclization
  • Annulation
  • aldehydes
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