Controlled Chain-Scission of Polybutadiene by the Schwartz Hydrozirconation
文献类型：期刊论文
| 作者 | Zheng, Jun1,2; Lin, Yichao1,2; Liu, Feng1,2; Tan, Haiying1,2; Wang, Yanhui1; Tang, Tao1 |
| 刊名 | CHEMISTRY-A EUROPEAN JOURNAL
 |
| 出版日期 | 2013 |
| 卷号 | 19期号:2页码:540-547 |
| 关键词 | C-c Activation Chain Scission Chain Structures Olefins Polymers Zirconium |
| ISSN号 | 0947-6539 |
| DOI | 10.1002/chem.201202942 |
| 英文摘要 | Controlled chain-scission of polybutadiene (PB), polyisoprene, and poly(styrene-co-butadiene), induced by bis(cyclopentadienyl) zirconium hydrochloride (Cp2ZrHCl), was revealed at room temperature. The chain-scission reaction of linear PB was studied by means of GPC, NMR spectroscopy, and MALDI-TOF-MS. It was confirmed that the molecular weights of degraded products were quasi-quantitatively controlled by Cp2ZrHCl loading, irrespective of the starting PB, whereas the microstructure of PB chains was crucial to the scission reaction. The hydrozirconation of model molecules indicated that the existence of an internal double bond in compounds with multiple double bonds was essential for chain cleavage. The chain-cleavage mechanism was proposed to involve hydrozirconation of internal double bonds in PB chains and beta-alkyl elimination. Furthermore, metallocene-catalyzed chain-scission by a chain-transfer reaction was developed. It is believed that the reported chain scission offers a promising pathway for end-group functionalization by chain cleavage and presents a new application of Schwartz's reagent. |
| 语种 | 英语 |
| WOS记录号 | WOS:000313161200016 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46491]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Tang, Tao |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Jun,Lin, Yichao,Liu, Feng,et al. Controlled Chain-Scission of Polybutadiene by the Schwartz Hydrozirconation[J]. CHEMISTRY-A EUROPEAN JOURNAL,2013,19(2):540-547. |
| APA | Zheng, Jun,Lin, Yichao,Liu, Feng,Tan, Haiying,Wang, Yanhui,&Tang, Tao.(2013).Controlled Chain-Scission of Polybutadiene by the Schwartz Hydrozirconation.CHEMISTRY-A EUROPEAN JOURNAL,19(2),540-547. |
| MLA | Zheng, Jun,et al."Controlled Chain-Scission of Polybutadiene by the Schwartz Hydrozirconation".CHEMISTRY-A EUROPEAN JOURNAL 19.2(2013):540-547. |
入库方式： OAI收割
来源：化学研究所
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