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p-TsOH Promoted Synthesis of Benzo-Fused O-Heterocycles from Alkynols via Ring Contraction and C-O Scission Strategy

We here report the first divergent synthesis of benzo-fused O-heterocycles by p-toluene sulfonic acid promoted cascade reactions involving alkyne hydration, double cyclization, ring contraction and C-O bond cleavage from alkynols. Reaction mechanism was validated by obtaining the x-ray structure of fused ben

Authors:   Gopal Chandru Senadi; Jeh-Jeng Wang
Journal:   Green Chemistry
DOI:   10.1039/C8GC00749G
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