Synthesis of 4‐Arylthio‐3‐hydroxyphthalate by the Diels–Alder Reactionof 4‐Arylthio‐3‐hydroxy‐2‐pyrone

Takuzo Komiyama Department of Material and Energy Science, Graduate School of Environmental Science, Okayama University, Okayama, Japan

Yutaka Takaguchi Department of Material and Energy Science, Graduate School of Environmental Science, Okayama University, Okayama, Japan

Sadao Tsuboi Department of Material and Energy Science, Graduate School of Environmental Science, Okayama University, Okayama, JapanCorrespondence[email protected]

Abstract

Treatment of 4‐arylthio‐3‐hydroxy‐2‐pyrones with acetylenedicarboxylates gave 4‐arylthio‐3‐hydroxyphthalates by the base‐catalyzed Diels–Alder reaction via a decarboxylation in good yields.

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Synthesis of 4‐Arylthio‐3‐hydroxyphthalate by the Diels–Alder Reactionof 4‐Arylthio‐3‐hydroxy‐2‐pyrone

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Synthesis of 4‐Arylthio‐3‐hydroxyphthalate by the Diels–Alder Reactionof 4‐Arylthio‐3‐hydroxy‐2‐pyrone

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