Enhancing the Synthetic Utility of 3-Haloaryne Intermediates by Their Efficient Generation from Readily Synthesizable <i>ortho</i>-Iodoaryl Triflate-type Precursors
作者:Suguru Yoshida、Akira Nagai、Keisuke Uchida、Takamitsu Hosoya
DOI:10.1246/cl.170136
日期:2017.5.5
Generation of 3-haloarynes from o-iodoaryl triflate-type precursors is reported. The method enables the generation of 3-fluorobenzyne with significantly high electrophilicity at −78 °C, allowing the formation of a three-component-coupled product between 3-fluorobenzyne, tetrahydrofuran that is used as a solvent, and a thiol. The ready availability of the precursors and the orthogonality in the conditions
据报道,从邻碘芳基三氟甲磺酸酯类前体生成 3-卤代芳烃。该方法能够在-78°C 下生成具有显着高亲电性的 3-氟苄,从而在 3-氟苄、用作溶剂的四氢呋喃和硫醇之间形成三组分偶联产物。前体的易得性和从邻甲硅烷芳基三氟甲磺酸酯型前体生成芳烃的条件的正交性也增强了 3-卤代芳烃中间体的合成效用,使各种芳香族化合物易于获得。