title: Cyclopentadienyl nickel(ii) N,C-chelating benzothiazolyl NHC complexes: synthesis, characterization and application in catalytic C-C bond formation reactions.
abstract: Cyclopentadienyl (Cp) Ni(ii) complexes [CpNiL][PF6] containing hybrid N,C chelating benzothiazolyl NHC ligands (L1 = 1-(2-benzothiazolyl)-3-methylimidazol-2-ylidene, ; L2 = 1-(2-benzothiazolyl)-3-allylimidazol-2-ylidene, ; L3 = 1-(2-benzothiazolyl)-3-benzylimidazol-2-ylidene, ) have been synthesized and fully characterized. The catalytic activity of in some C-C bond formation reactions has been examined. They are efficient catalysts for the homo-coupling of benzyl bromide in the presence of MeMgCl at r.t. with good functional group tolerance. Complex is active in the catalytic oxidative homo-coupling of Grignard reagents with 1,2-dichloroethane as an oxidant at r.t.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. zhaoj@imre.a-star.edu.sg andyhor@hku.hk.
authors.forename: Wei Jie
authors.initials: WJ
authors.lastname: Teo
authors.affiliation: Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. zhaoj@imre.a-star.edu.sg andyhor@hku.hk.
authors.forename: Fei
authors.initials: F
authors.lastname: Xue
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. zhaoj@imre.a-star.edu.sg andyhor@hku.hk and Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore and Department of Chemistry, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
authors.forename: T S
authors.initials: TS
authors.lastname: Andy Hor
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. zhaoj@imre.a-star.edu.sg andyhor@hku.hk and Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhao