Covalent organic frameworks (COFs) as a new generation of porous materials, are assembled by covalent linkers which have strong building blocks [1,2]. In recent years, COFs due to having diverse properties such as excellent thermal and physical stability, large surface areas, designable and post modification ability, are various application chemistry and organic synthetic methodologies [3]. Tetrazoles and their nitrile-linked derivatives are known as one of the most important families of N-heterocycle compounds, have a decisive role in most of sciences. These chemicals have been used in diverse fields such as medicinal chemistry, sensors, energetic materials, and agriculture [4,5]. In this work, we synthesized a ferrocene-based covalent organic framework as highly active catalyst. After full characterization of the mentioned catalyst, it was used for the preparation of nitrile-linked tetrazole derivatives.
