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Scandium-Catalyzed Self-Assisted Polar Co-monomer Enchainment in Ethylene Polymerization
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-11-15 05:40:27 , DOI: 10.1002/anie.201708797
Jiazhen Chen 1 , Yanshan Gao 1 , Binghao Wang 1 , Tracy L. Lohr 1 , Tobin J. Marks 1
Affiliation  

Self-assisted: Sc-catalyzed ethylene + amino olefin (AO) copolymerizations proceed with appreciable activity and AO incorporation in the absence of Lewis acid masking agents. Linker-length-dependent AO enchainment patterns and mechanistic probes support an unusual amino-group-assisted enchainment pathway. Binuclear-catalyst-mediated copolymerization rates are less sensitive to AO concentration, and incorporation patterns at large linker lengths implicate bimetallic cooperative enchainment.

中文翻译:

乙烯聚合中dium催化的自助极性共聚单体链

自我辅助:在没有路易斯酸掩蔽剂的情况下,Sc催化的乙烯+氨基烯烃(AO)的共聚反应具有明显的活性,并且AO掺入。取决于接头长度的AO束缚模式和机制探针支持不寻常的氨基辅助束缚途径。双核催化剂介导的共聚速率对AO浓度较不敏感,并且在长连接基团长度处的掺入方式暗示了双金属协作链的形成。
更新日期:2017-11-15
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