在乙醇溶剂中冰醋酸催化下,2-羟基-5-叔丁基-1,3-亚苯基二甲醛和相应的取代苯胺缩合得到74.6%～85.7%的双席夫碱配体.将配体分别与CoCl2@6H2O和NiCl2@6H2O反应,得到6个配合物,收率74.1%～85.2%.合成路线简单易行,产率高.
The 2,6 - bis(imino) phenoxy ligands were prepared in 74.6 % ～ 85.7 % yield by the condensa-tion of the appropriate aniline with 2 - hydroxy - 5 - tert - butyl - isophthaldehyde. A series of new cobalt andnickel complexes LMX2(M = Co, X = Cl; M = Ni, X= Cl) bearing 2,6 - bis(imino)phenoxy ligands were syn-thesized in yield 74.1% ～ 85.2 %.
[1] ITTLE S D, JOHNSON L K, BROOKHART M. Late- metal catalysts for ethylene homo- and copolymerization [J]. Chemical Reviews 2000, 100.
[2] G.J.P.Britovsek, V.C.Gibson, D.F.Wass. The search for new-generation olefin polymerization catalysts: Life beyond metallocenes [J]. Angewandte Chemie International Edition 1999, 4(4).
[3] JOHNSON L K, MECKING S, BROOKHART M. Copolymerization of ethylene and propylene with functionalized vinyl monomers by palladium( Ⅱ ) catalysts [J]. Journal of the American Chemical Society 1996, 118.
[4] KILLIAN C M, TEMPEL D J, JOHNSON L K. Living polymerization of α-olefins [J]. Journal of the American Chemical Society 1996, 118.
[5] JOHNSON L K, KILLIAN C M, BROOKHART M. New Pd( Ⅱ ) - based and Ni( Ⅱ ) - based catalysts for polymerization of ethylene and α- olefins [J]. Journal of the American Chemical Society 1995, 117.
[6] Mecking S., Wang L., Brookhart M., Johnson LK.. Mechanistic studies of the palladium-catalyzed copolymerization of ethylene and alpha-olefins with methyl acrylate [J]. Journal of the American Chemical Society 1998, 5(5).
[7] Small BL., Bennett AMA., Brookhart M.. Highly active iron and cobalt catalysts for the polymerization of ethylene [J]. Journal of the American Chemical Society 1998, 16(16).
[8] George J. P. Britovsek, Vernon C. Gibson, Brian S. Kimberley, Peter J. Maddox, Stuart J. McTavish, Gregory A. Solan, Andrew J. P. White, David J. Williams. Novel olefin polymerization catalysts based on iron and cobalt [J]. Chemical communications 1998, 7(7).
[9] Wang C, FRIEDRICH S, YOUNKIN T R. Neutral nickel ( Ⅱ )-based catalysts for ethylene polymerization [J]. Organometallics 1998, 17(17).
[10] Small BL., Brookhart M.. Iron-based catalysts with exceptionally high activities and selectivities for oligomerization of ethylene to linear alpha-olefins [J]. Journal of the American Chemical Society 1998, 28(28).
