Microcrystalline Zinc Coordination Polymers as Single-site Heterogeneous Catalysts for the Selective Synthesis of Mono-oxazolines from Amino Alcohol and Dinitriles

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• 作者：Junning Wang ; Chao Huang ; Kuan Gao ; Xiaolu Wang ; Mengjia Liu ; Haoran Ma ; Prof. Jie Wu and Prof. Hongwei Hou
• 刊名：Chemistry – An Asian Journal
• 出版年：2016
• 出版时间：June 21, 2016
• 年：2016
• 卷：11
• 期：12
• 页码：1856-1862
• 全文大小：1059K
• ISSN：1861-471X

文摘

In our effort to develop coordination polymers (CPs)-based single-site catalysts for the selective synthesis of mono-oxazolines, two Zn-based CPs, [{Zn₆(idbt)₄(phen)₄} ⋅3 H₂O]_n (1) and [{Zn₃(idbt)₂(H₂O)₄}⋅2 H₂O]_n (2) (H₃idbt= 5,5′-(1H-imidazole-4,5-diyl)-bis-(2H-tetrazole), phen=1,10-phenanthroline) have been synthesized. They exhibit two-dimensional structure and contain isolated and accessible catalytically active sites, mimicking the site isolation of many catalytic enzymes. Micro CPs 1 and 2 are obtained by using surfactant-mediated hydrothermal methods, and an investigation is conducted to explore how different surfactants affect their morphologies and particle sizes. Furthermore, micro 1 and 2 have shown to be effective heterogeneous catalysts for the reaction of amino alcohols and aromatic dinitriles, and exerted a significant influence on the selectivity of the catalytic reactions, yielding mono-oxazolines as the major reaction product.