Transesterification of glycerol with dimethyl carbonate for the synthesis of glycerol carbonate and glycidol by Iron (III) salen complex

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Journal of Organometallic Chemistry Pub Date : 2025-02-01 Epub Date: 2024-12-03 DOI:10.1016/j.jorganchem.2024.123467

Long-Yat Lai, Pak-Chung Lau, Tsz-Lung Kwong, Ka-Fu Yung

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Abstract

The transesterification of glycerol and dimethyl carbonate (DMC) was investigated in the presence of

μ

-oxo-Fe(salen)₂ under the optimal reaction condition. Several transition metal(salen) were tested, and only Fe (salen) shows an excellent results towards transesterification of glycerol. Therefore, Fe (salen) was characterized by IR, elemental analysis, MS, XPS and Surface Basicity test, and it can be confirmed that the as-synthesized Fe(salen) was existed in the form of

μ

-oxo-Fe(salen)₂. It was proposed that the

μ

-oxo-Fe(salen)₂ can provide two different reaction pathway based on its molecular structures and the electronic configuration of iron itself.

μ

-oxo-Fe(salen)₂ was reacted with the mixture of glycerol and DMC under microwave-heating in 60 min at 100 °C and at the molar ratio of glycerol:DMC:

μ

-oxo-Fe(salen)₂ of 1:2:0.01 and obtaining the highest glycerol carbonate yield of 93.8 %.

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甘油与碳酸二甲酯酯交换制备碳酸甘油和甘油的铁（III）萨伦配合物

在μ-氧化铁（salen）2存在下，研究了甘油与碳酸二甲酯（DMC）的酯交换反应。对几种过渡金属（salen）进行了试验，只有Fe （salen）在甘油酯交换反应中表现出优异的效果。因此，通过IR、元素分析、MS、XPS和表面碱度测试对Fe（salen）进行了表征，可以确定合成的Fe（salen）以μ-oxo-Fe(salen)2的形式存在。基于μ-oxo-Fe(salen)2的分子结构和铁本身的电子构型，提出了μ-oxo-Fe(salen)2可以提供两种不同的反应途径。μ-氧-铁（salen）2与甘油和DMC的混合物在100℃微波加热下反应60 min，甘油：DMC:μ-氧-铁（salen）2的摩尔比为1:2:0.01，所得碳酸甘油收率最高，为93.8%。

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来源期刊

Journal of Organometallic Chemistry 化学-无机化学与核化学

CiteScore

4.40

自引率

8.70%

发文量

221

审稿时长

36 days

期刊介绍： The Journal of Organometallic Chemistry targets original papers dealing with theoretical aspects, structural chemistry, synthesis, physical and chemical properties (including reaction mechanisms), and practical applications of organometallic compounds. Organometallic compounds are defined as compounds that contain metal - carbon bonds. The term metal includes all alkali and alkaline earth metals, all transition metals and the lanthanides and actinides in the Periodic Table. Metalloids including the elements in Group 13 and the heavier members of the Groups 14 - 16 are also included. The term chemistry includes syntheses, characterizations and reaction chemistry of all such compounds. Research reports based on use of organometallic complexes in bioorganometallic chemistry, medicine, material sciences, homogeneous catalysis and energy conversion are also welcome. The scope of the journal has been enlarged to encompass important research on organometallic complexes in bioorganometallic chemistry and material sciences, and of heavier main group elements in organometallic chemistry. The journal also publishes review articles, short communications and notes.