Synthesis of 3, 3-Di(indolyl)indolin-2-one in the Presence of Iron Nanocatalysts

3, 3-di(indolyl)indolin-2-one derivatives have attracted the attention of researchers due to their various biological and medicinal applications. Due to the significant importance of indole compounds, various methods with different conditions and catalysts have been used for their synthesis. However, some of these reactions have disadvantages, such as low efficiency, long reaction time, use of toxic solvents, etc. In the study, iron nanocatalysts have been used as a suitable catalyst to prepare 3, 3-di(indolyl)indolin-2-one derivatives. This method has many advantages compared to other methods and it completes the reaction in a shorter time and with a higher yield, as described in this article.