Notable effect of imino substituent for the efficient ring-opening polymerization. of ε-caprolactone initiated by Al complexes containing phenoxy-imine ligand of type, Me2Al(L) [L: O-2-tBu-6-(RN=CH)C6H3; R: 2,6-iPr2C6H3, tBu, adamantyl, C6F5]

被引：61
|
作者：
Iwasa, Naruhito [1 ,2 ]
Liu, Jingyu [1 ]
Nomura, Kotohiro [1 ]
机构：
[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan
[2] Daiso Co Ltd, Res Labs, Amagasaki, Hyogo 6600842, Japan
来源：
CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 06期
基金：
日本学术振兴会;
关键词：
Al complex; ring-opening polymerization; caprolactone; ligand effect;
D O I：
10.1016/j.catcom.2007.10.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Al complexes containing phenoxy-imine ligands of type, Me2Al[O-2-tBu-6-(RN{double bond, long}CH)C6H3] [R = 2,6-iPr2C6H3 (1), tBu (2), adamantyl (3), C6F5 (4)] were prepared, identified, and their structures for 1-3 were determined by X-ray crystallography. The catalytic activity (turnover number, TON) in the ring-opening polymerization (ROP) of ε-caprolactone initiated by 1-4 upon the presence of nBuOH increased in the order: 4 ≫ 1 ≫ 2 > 3, suggesting that the imino substituent (R) plays an important role for the efficient ROP in a controlled manner; the highly efficient ROP has been achieved by the C6F5 analogue (4). © 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1148 / 1152
页数：5
相关论文
共 50 条
  • [1] Organoantimony(III) compounds containing (imino)aryl ligands of the type 2-(RN=CH)C6H4 (R=2′,4′,6′-Me3C6H2, 2′,6′-iPr2C6H3): bromides and chalcogenides
    Preda, Ana Maria
    Rat, Ciprian I.
    Silvestru, Cristian
    Breunig, Hans J.
    Lang, Heinrich
    Rueffer, Tobias
    Mehring, Michael
    DALTON TRANSACTIONS, 2013, 42 (04) : 1144 - 1158
  • [2] Polymerization of propylene with the [ArN(CH2)3NAr]TiCl2 (Ar = 2,6-iPr2C6H3) complex using R3Al/Ph3CB(C6F5)4 (R = Me, Et, iBu) as cocatalyst
    Jin, JZ
    Tsubaki, S
    Uozumi, T
    Sano, T
    Soga, K
    MACROMOLECULAR RAPID COMMUNICATIONS, 1998, 19 (11) : 597 - U3
  • [3] Steric and Electronic Effects on the Heterolytic H2-Splitting by Phosphine-Boranes R3B/PR′3 (R = C6F5, Ph; R′ = C6H2Me3, tBu, Ph, C6F5, Me, H): A Computational Study
    Gao, Shulin
    Wu, Wei
    Mo, Yirong
    INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, 2011, 111 (14) : 3761 - 3775
  • [4] Synthesis, structural analysis of the hetero-bimetallic complexes MMe[(O-2,4-tBu2C6H2-6-CH2)2(μ2-O-2,4-tBu2C6H2-6-CH2)N][Me2Al(μ2-OiPr)] [M = Zr, Hf] and their use in catalysis for ethylene polymerisation
    Takii, Yuki
    Inagaki, Akiko
    Nomura, Kotohiro
    DALTON TRANSACTIONS, 2013, 42 (32) : 11632 - 11639
  • [5] MOLECULAR STRUCTURE OF [SnCl4(N=CH-C6H5)(2,6-iPr2)C6H3], A TIN TETRACHLORIDE COMPLEX WITH AN (IMINO)ARYL LIGAND
    Barbul, Ioana
    Varga, Richard Attila
    REVUE ROUMAINE DE CHIMIE, 2015, 60 (7-8) : 845 - 848
  • [6] Synthesis and Structural Analysis of Zr-Al Heterobimetallic Complexes, [ZrX{(O-2,4-tBu2C6H2-6-CH2)3(μ2-O-2,4-tBu2-C6H2-6-CH2)}N][R2Al(μ2-OiPr)] [X = Cl, Et, iBu; R = Me, Et, iBu]. Unique Reactivity of the iBu Complex
    Tewasekson, Udomchai
    Tsutsumi, Ken
    Nomura, Kotohiro
    ORGANOMETALLICS, 2016, 35 (06) : 866 - 874
  • [7] Reactivity of Dianionic β-Diketiminato Samarium Amide LSmN(SiMe3)2(THF) (L = {(2,6-iPr2C6H3)NC(CH2)CHC(CH3)N(2,6-iPr2C6H3)}2-) toward ArCN (Ar = C6H5, p-MeOC6H4) and Ph2C=C=NtBu: A Facile Route for Modification of Dianionic β-Diketiminato Ligands
    Liu, Peng
    Zhang, Yong
    Shen, Qi
    ORGANOMETALLICS, 2013, 32 (05) : 1295 - 1299
  • [8] Synthesis, Characterization, and Reactivity of Nickel Hydride Complexes Containing 2,6-C6H3(CH2PR2)2 (R = tBu, cHex, and iPr) Pincer Ligands
    Boro, Brian J.
    Duesler, Eileen N.
    Goldberg, Karen I.
    Kemp, Richard A.
    INORGANIC CHEMISTRY, 2009, 48 (12) : 5081 - 5087
  • [9] BDI*MgX(L) where X = nBu and OtBu and L = THF, py and DMAP. The rates of kinetic exchange of L where BDI* = CH{C(tBu)N-2,6-iPr2C6H3}2
    Balasanthiran, Vagulejan
    Chisholm, Malcolm H.
    Choojun, Kittisak
    Durr, Christopher B.
    Wambua, Pasco M.
    POLYHEDRON, 2016, 103 : 235 - 240
  • [10] Polymerization of 1-hexene, 1-octene catalyzed by Cp′TiCl2(O-2,6-iPr2C6H3)-MAO system.: Unexpected increase of the catalytic activity for ethylene/1-hexene copolymerization by (1,3-tBu2C5H3)TiCl2(O-2,6-iPr2C6H3)-MAO catalyst system
    Nomura, K
    Komatsu, T
    Imanishi, Y
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 152 (1-2) : 249 - 252
12345