磷酸化咪唑功能化氯甲基化聚苯乙烯负载铑催化剂用于二氢呋喃氢甲酰化反应

IF 2.3 4区 化学 Q3 CHEMISTRY, PHYSICAL
Fuxiang Jin, Qiao Liu, Honghong Rao, Wenpeng Wang, Meirong Kang, Daqian Xu, Hailong Liu
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引用次数: 0

摘要

在氯甲基化聚苯乙烯树脂上接枝磷氮配体,并与金属铑配位,合成了咪唑功能化氯甲基化聚苯乙烯的磷酸化载体。这种方法为负载配体的设计多样性提供了基础。对制备的负载型催化剂在2,5-二氢呋喃(2,5- dhf)氢甲酰化反应中的催化活性进行了评价。本研究成功制备了一系列咪唑功能化铑磷酸化催化剂,并利用FT-IR、TG、SEM和XPS对其进行了表征。证实了催化剂中铑与磷、氮的配位关系。Rh (CO)2(acac)@PS-IM-PPh2对3-甲酰基四氢呋喃的选择性为97.1%,2,5- dhf的转化率达58.4%。值得注意的是,在催化剂使用五次循环后,产物选择性仍然很高。该催化剂体系易于回收,并且在一系列底物上保持了良好的选择性。将磷化氢引入有机聚合物载体的咪唑基团中,形成氮-磷化氢协同配体。此外,通过连接不同的取代基阵列,可以衍生出各种咪唑基离子膦配体,为设计多样化的负载配体提供了基础。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Phosphorylated Imidazole-Functionalized Chloromethylated Polystyrene-Supported Rhodium Catalyst for Hydroformylation of Dihydrofurans

Phosphorylated Imidazole-Functionalized Chloromethylated Polystyrene-Supported Rhodium Catalyst for Hydroformylation of Dihydrofurans

A phosphorylated imidazole-functionalized chloromethylated polystyrene carrier was synthesized by grafting phosphine–nitrogen ligands onto chloromethylated polystyrene resin, followed by coordination with rhodium metal. This approach provides a foundation for the design diversity of supported ligands. The catalytic activity of the prepared supported catalyst was evaluated in the hydroformylation reaction of 2,5-dihydrofuran (2,5-DHF). In this study, a series of phosphorylated imidazole-functionalized rhodium catalysts were successfully prepared and characterized using FT-IR Spectroscopy, TG, SEM, and XPS. The coordination relationships between the rhodium and the phosphorus and nitrogen species within the catalyst were confirmed. The conversion of 2,5-DHF reached 58.4%, with a selectivity of 97.1% for 3-formyltetrahydrofuran using Rh (CO)2(acac)@PS-IM-PPh2. Notably, product selectivity remained high after five cycles of catalyst use. The catalyst system was easily recoverable, and good selectivity was maintained across a range of substrates. The introduction of phosphine into the imidazole group of the organic polymer support creates a nitrogen-phosphine synergistic ligand. Furthermore, by linking a diverse array of substituents, various imidazole-based ionic phosphine ligands can be derived, providing a basis for the design diversity of supported ligands.

Graphical Abstract

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来源期刊
Catalysis Letters
Catalysis Letters 化学-物理化学
CiteScore
5.70
自引率
3.60%
发文量
327
审稿时长
1 months
期刊介绍: Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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