Immobilization of Palladium Complex in Mesoporous Silica MCM-41: an efficient and reusable catalytic system for C-C coupling reaction

Among the various types of mesoporous silica, MCM-41 shows a highly ordered hexagonal array of one dimensional mesopores with pore diameter of 20–100 Aº, high surface area ( 1000 m2.g−1), structural and high thermal stability (ca. 900 °C), which their surface can be functionalized [1].. This compound has been used as support in the preparation of catalysts for organic transformations [2,3]. In the current study, we try to report the synthesis of immobilized palladium S-methylisothiourea complex on MCM-41 (Pd(0)-SMT-MCM-41) its catalytic properties in the C-C cross coupling reactions. This catalyst was characterized by TGA/DTA, XRD, SEM/EDX, Fourier FT-IR, and TEM. Thus, this catalytic system was offered, simplicity of operation, heterogeneous nature, excellent yields, short reaction times, simple work up in cross-coupling reactions for the formation ofcarbon–carbon bonds using of aryl halides with Ph3SnCl. Finally, the catalyst was recovered and reused for several times without significant loss of their catalytic activity.