Outline
DOI: 10.1021/acs.orglett.6c03779 ISSN: 1523-7060
Synthesis of Thiophene-Fused π-Systems from Diarylethylenes via C–H Thienannulation and Mechanistic Studies
Baodong Lin, Cailin Wei, Wenyu Lai, Yunbin Wang, Baolin LiAbstract
A facile, catalyst- and additive-free C–H thienannulation for the construction of thiophene-fused π-systems has been reported. This efficient protocol utilizes diarylethylenes and elemental sulfur to furnish diverse products in up to 98% yield with broad functional group tolerance and low-cost. A thiolate anion-participated domino mechanism was proposed, and gram-scale synthesis validated its good scalability and practicability.
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