title: An efficient palladium-benzimidazolyl phosphine complex for the Suzuki-Miyaura coupling of aryl mesylates: facile ligand synthesis and metal complex characterization.
abstract: A new class of easily accessible hemilabile benzimidazolyl phosphine ligands has been developed. The ligand skeleton is prepared from commercially available and inexpensive o-phenylenediamine and 2-bromobenzoic acid. With catalyst loading down to 0.5 mol% palladium, excellent catalytic activity towards the Suzuki-Miyaura coupling of aryl mesylates is still observed. This represents the lowest catalyst loading achieved so far for this reaction in general. X-Ray crystallography shows that new ligand L2 is coordinated with Pd in a κ(2)-P,N fashion.
authors.affiliation: State Key Laboratory of Chirosciences, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
authors.forename: Kin Ho
authors.initials: KH
authors.lastname: Chung
authors.forename: Chau Ming
authors.initials: CM
authors.lastname: So
authors.forename: Shun Man
authors.initials: SM
authors.lastname: Wong
authors.forename: Chi Him
authors.initials: CH
authors.lastname: Luk
authors.forename: Zhongyuan
authors.initials: Z
authors.lastname: Zhou
authors.forename: Chak Po
authors.initials: CP
authors.lastname: Lau
authors.forename: Fuk Yee
authors.initials: FY
authors.lastname: Kwong
mesh_terms: D002384:Catalysis; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D008698:Mesylates / Q000737:chemistry*; D008968:Molecular Conformation; D010165:Palladium / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D008698:Mesylates; D010720:Phosphines; D010165:Palladium; C044646:phosphine