Boehmite nanoparticles are not air or moisture sensitive, therefore have been prepared in water without inert atmosphere using inexpensive materials. Pd‐isatin‐boehmite was synthesized and used as heterogeneous organometallic catalyst for the synthesis of 5‐substituted 1H‐tetrazoles and C‐C band formation. Pd‐isatin‐boehmite characterized by XRD, TGA, SEM and ICP‐OES techniques. This catalyst was reused for several times without significant loss of its catalytic efficiency or palladium leaching. Heterogeneity of this catalyst has been studied using ICP‐OES technique.
