摘要
nickel thiocyanate complex was prepared by the reaction of Ni(NCS)2 with (2S,3S)-2,3-bis(diphenylphosphino)butane (Chiraphos) by following a method reported in the literature. The resulting nickel complex was found to be active in the polymerization reactions of 1,4-dihalobenzenes and 2-halo-3-hexylthiophenes, leading to poly- 1,4-phenylenes and poly(3-hexylthiophene-2,5-diyl), respectively. The polymerization in the presence of similar catalysts containing other ligands, such as 1,2-bis(diphenylphosphino)ethane, 1,3-bis(diphenylphosphino) propane, or N-heterocyclic carbenes, also proceeded in a similar manner. Ni(NCS)2 complexes also successfully catalyzed Suzuki- Miyaura couplings and Buchwald-Hartwig aminations to afford the corresponding biaryls and arylamines, respectively.