Heteroaryl Backbone Strategy in Bisphosphine Monoxide Palladium-Catalyzed Ethylene Polymerization and Copolymerization with Polar Monomers
文献类型：会议论文
| 作者 | Ye, Junhao; Mu, Hongliang; Wang, Zhen; Jian, Zhongbao |
| 出版日期 | 2019 |
| 关键词 | CHAIN-WALKING POLYMERIZATION HYPERBRANCHED POLYETHYLENES INSERTION COPOLYMERIZATION FUNCTIONAL POLYOLEFINS NICKEL-CATALYSTS VINYL MONOMERS BITE ANGLE LIGAND COMPLEXES DESIGN |
| 卷号 | 38 |
| 期号 | 15 |
| DOI | 10.1021/acs.organomet.9b00340 |
| 英文摘要 | The backbone structure of ligand is of critical importance to modulate the selectivity and the reactivity of catalyst. In this contribution, heteroaryl backbone (benzo)thiophene was for the first time installed on bisphosphinemonoxide (PO) ligands. Corresponding palladium complexes {kappa(2)-2-P(2-OMe-Ph)(2)-3-P(0)(Ph)(2)-4 Br-C4HS}PdMeCl (2a) and {kappa(2)-2-(PRR2)-R-1-3-P(O)(Ph)(2)-C8H4S}PdMeCl {2b: R-1 = R-2 = 2-OMe-Ph; 2c: R-1 = R-2 = Cy; 2d: R-1 = Ph, R-2 = 2-(2',6'(OMe)(2)C6H3)-C6H4} and the compared phenylene-linked palladium complex {kappa(2)-1-P(2-OMe-Ph)(2)-2-P(O)(Ph)(2)-C6H4}-PdMeCl (2e) were synthesized and fully characterized by H-1, C-13, P-31, and 2D-NMR spectroscopy, elemental analysis, and single -crystal X-ray diffraction (2a, 2b, and 2d). In the presence of Na+B[3,5-(CF3)(2)C6H3](4) (NaBAr4F), these complexes showed high activities (up to 10 000 kg mol(-1) h(-1)) for ethylene polymerization that are comparable to the prototype phenylene-linked BPMO-Pd catalysts, producing moderate to high molecular weight (M-n, up to 90 kDa) linear polyethylenes. These catalysts also copolymerized ethylene with various commercially available polar monomers, such as acrylates, acrylic acid, and vinyl butyl ether, to give linear functionalized polyethylenes with reasonable catalytic activities and moderate copolymer molecular weights and comonomer incorporations. This work provides new ligand backbones that span donor fragments, and points to new opportunities in catalyst designing for olefin (co)polymerization. |
| 学科主题 | Chemistry |
| ISSN号 | 0276-7333 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23321]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Ye, Junhao,Mu, Hongliang,Wang, Zhen,et al. Heteroaryl Backbone Strategy in Bisphosphine Monoxide Palladium-Catalyzed Ethylene Polymerization and Copolymerization with Polar Monomers[C]. 见:. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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