A simple and benign protocol has been explored for the preparation of 2,4,6-triarylpyridines by a one-pot reaction between aryl aldehydes, enolizable ketones and ammonium acetate in the presence of N-bromosuccinimide or trichloroisocyanuric acid as green and neutral catalysts. The reactions proceed smoothly at 130 °C under solvent-free conditions to provide 2,4,6-triarylpyridines in good yields.
通过一锅法反应,在芳基醛、可酮化酮和醋酸铵的存在下,利用N-溴代琥珀酰亚胺或三氯异氰尿酸作为绿色和中性催化剂,探索了一种简单和良性的制备2,4,6-三芳基吡啶的协议。在无溶剂条件下,反应在130°C下顺利进行,以较高的产率提供2,4,6-三芳基吡啶。