Synthesis, Structure, and Ring‐Opening Polymerization Catalysis of Zinc Complexes Containing Amido Phosphinimine Ligands
作者:Lan‐Chang Liang、Tzung‐Ling Tsai、Chun‐Wei Li、Yu‐Lin Hsu、Ting‐Yu Lee
DOI:10.1002/ejic.201001362
日期:2011.7
organozinc complexes [2a–c]ZnMe (3a–c) and [2a–c]ZnEt (4a–c). Deprotonation of H[2a–c] with nBuLi at –35 °C generated [2a–c]Li (5a–c), which may be isolated as either solvent-free complexes or solvated adducts depending on the reaction solvents employed (toluene, OEt2, or THF). Metathetical reactions of 5a·OEt2 with Zn(OAc)2 in THF at –35 °C produced [2a]Zn(OAc) (6a). These amido phosphinimine derivatives
一系列 [(NAr1)-o-(Ph2P=NAr2)C6H4]– (2a: Ar1 = 2,6-C6H3iPr2, Ar2 = 2,6-C6H3iPr2; 2b: Ar1 = 2,6 -C6H3iPr2, Ar2 = 2,4,6-C6H2Me3; 2c: Ar1 = 2,6-C6H3Me2, Ar2 = 2,4,6-C6H2Me3),它们是单阴离子 β-二酮亚胺的电子变体,已被用于检查锌的配位化学。ZnR2 (R = Me, Et) 与 H[2a–c] 在 –35 °C 的甲苯或醚溶液中的烷烃消除反应干净地提供了相应的有机锌配合物 [2a–c] ZnMe (3a–c) 和 [2a– c]ZnEt(4a-c)。H[2a–c] 与 nBuLi 在 –35 °C 下的去质子化生成 [2a–c]Li (5a–c),根据所使用的反应溶剂(甲苯、 OEt2 或 THF)。5a·OEt2 与 Zn(OAc)2