title: Pd(0)-CMC@Ce(OH)(4) organic/inorganic hybrid as highly active catalyst for the Suzuki-Miyaura reaction.
abstract: A very easy sequential metathesis for the synthesis of Pd(II)-CMC@Ce(OH)4organic/inorganic hybrid and its application as effective pre-catalyst for the Suzuki-Miyaura reaction have been reported. It was found that the Pd nanoparticles (Pd NPs) were formed in situ in the course of the Suzuki-Miyaura couplings when Pd(II)-CMC@Ce(OH)4was used as a pre-catalyst. The activity of the Pd NPs in the reaction was enhanced synergistically by the unique redox properties (Ce3+/Ce4+) of Ce(OH)4and coordination with carboxyl groups as well as free hydroxyl groups of the hybrid of CMC@Ce(OH)4. The results exhibit the Pd(0)-CMC@Ce(OH)4is super over Pd(II)@CMC, Pd(II)@CeO2, and Pd(II)@Ce(OH)4catalysts in the Suzuki-Miyaura reaction. Moreover, the catalyst could be easily separated by simple filtration and reused at least seven runs without losing its activity.
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Bijin
authors.initials: B
authors.lastname: Lin
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Zhuan
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
authors.forename: Xiaojian
authors.initials: X
authors.lastname: Liao
authors.affiliation: Department of Chemistry, Jinan University, Guangzhou 510632, PR China. Electronic address: tlyq@jnu.edu.cn.
authors.forename: Yiqun
authors.initials: Y
authors.lastname: Li
keywords: Carboxymethylcellulose; Cerium (IV) hydroxide; Organic/inorganic hybrid; Palladium nanoparticle; Suzuki–Miyaura reaction