selective, and rapid transformation of primary amines and diamines to isothiocyanates and cyclic thioureas is disclosed. As opposed to established approaches that employ toxic or volatile electrophilic liquids and require reaction control (i.e., slow addition, cooling), this protocol utilizes the bench-stable, solid reagent (Me4N)SCF3 at room temperature. The method is characterized by operational simplicity
公开了
伯胺和二胺高效,选择性和快速转化为异
硫氰酸酯和环状
硫脲的方法。与采用有毒或挥发性亲电子液体并需要反应控制(即,缓慢添加,冷却)的既定方法相反,该协议在室温下利用了台式稳定的固体试剂(Me 4 N)SCF 3。该方法的特点是操作简单,速度快,效率高,官能团耐受性高和后期适用性强。副产物为固体,允许通过过滤分离目标化合物。