作者:Deniz Gunes、Okan Sirkecioglu、Niyazi Bicak
DOI:10.1080/10426500903213563
日期:2010.7.30
A simple and convenient one-pot procedure is described for the synthesis of thioethers via boron esters. This procedure involves in-situ generation of alkyl sulfates by reaction of trialkyl borates with concentrated sulfuric acid and subsequent reaction with thiols in the presence of pyridine. The reactions with boron esters of primary or secondary alcohols proceed cleanly at 100°C and afford aliphatic
描述了一种通过硼酯合成硫醚的简单方便的一锅法。该过程包括通过硼酸三烷基酯与浓硫酸的反应以及随后在吡啶存在下与硫醇的反应原位生成烷基硫酸盐。与伯醇或仲醇硼酯的反应在 100°C 下进行,并在 24 小时内以合理的产率 (59-93%) 提供脂肪族硫醚。有趣的是,产物的 1H NMR 谱没有显示位置异构的迹象。然而,由于苯环上的亲电取代,该方法对苯硫酚失败并且不会产生芳族硫醚。