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Bunyarat Rungtaweevoranit Akkarapol Butsuri Krittaphat Wongma Karoon Sadorn Kitjanit Neranon Chakkrapan Nerungsi Tienthong Thongpanchang 《Tetrahedron letters》2012,53(14):1816-1818
Thiophene end-capped aromatic analogues, that is, naphthothiophenes, naphthodithiophenes, pyrenothiophene, and benzotrithiophene, can be prepared from commercially available hydroxyarenes in two steps, including (1) a consecutive acid-mediated nucleophilic aromatic substitution of hydroxyarenes with 2-mercaptoethanol, followed by cyclization to form an arene-fused dihydrothiophene, and (2) oxidation of the dihydrothiophene unit to thiophene. 相似文献
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