Expanding the synthesizable multisubstituted benzo[<i>b</i>]thiophenes <i>via</i> 6,7-thienobenzynes generated from <i>o</i>-silylaryl triflate-type precursors
作者:Suguru Yoshida、Tomoko Kuribara、Takamoto Morita、Tsubasa Matsuzawa、Kazushi Morimoto、Takuya Kobayashi、Takamitsu Hosoya
DOI:10.1039/c8ra04035d
日期:——
Various 2,3-disubstituted 6,7-thienobenzynes have been efficiently generated from the corresponding o-silylaryl triflate-type precursors by activation with fluoride ions. The method has expanded the scope of synthesizable multisubstituted benzothiophenes, including those with various heteroatom substituents, and can be applied to the synthesis of EP4 antagonist analogs.
各种 2,3-二取代的 6,7-噻吩苄已通过氟离子活化从相应的o-甲硅烷基芳基三氟甲磺酸酯型前体有效地生成。该方法扩大了可合成多取代苯并噻吩的范围,包括具有各种杂原子取代基的化合物,可应用于EP4拮抗剂类似物的合成。