A sulfurative self-condensation method for constructing thiophenes 2 by a reaction between ketones 1 and elemental sulfur is reported. This reaction, which is catalyzed by anilines and their salts with strong acids, starts from readily available and inexpensive materials, and releases only water as a by-product.

中文翻译：

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酮和元素硫的硫化自缩合：苯胺酸-碱共轭对催化的噻吩三组分进入

报道了一种通过酮1与元素硫之间的反应来构建噻吩2的硫酸化自缩合方法。该反应由苯胺及其盐与强酸催化，从容易获得且廉价的材料开始，仅释放水作为副产物。