neda Seyedi

Due to their remarkable properties, Cellulose is an attractive and promising candidate that could be used as an efficient, renewable, and biodegradable support for catalyst. 1 In addition, cellulose is stable in most organic solvents, inexpensive, and has a high surface area. Typically, functional groups present in cellulose backbone participate in bonding with metals. In this study, for increasing the functional groups of Cellulose, Cellulose p-toluenesulfonate (Cell-OTs) was synthesized via a methods reported in the literature. 2 Afterward, Cell-OTs was reacted with melamine via the nucleophilic substitution of Cell-OTs with NH2 groups of melamine. In order to improve the catalytic performance, OTs- was exchanged by Cl-. 3 The resulting support was then decorated with palladium nanoparticles (Pd NPs) to give the final catalyst. 4 The synthesized Pd NPs were used as a catalyst for suzuki cross coupling reaction ( Figure 1). After optimozing the reaction condition in the reaction of phenylboronic acide and iodobenzen as a model reaction, the catalyc activity of Pd NPs was studied in the Suzuki cross-coupling reaction of various aryl halides with phenylboronic acid. The results exhibited that this catalyst efficiently catalyzed Suzuki cross-coupling reactions and gave the corresponding products in good to excellent yields and also the catalyst showed good activity after 5th cylces