Radical synthesis of tetrameric lignin model compound |
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Authors: | Xin-Ping Ouyang Yun Yang Guo-Dian Zhu Xue-Qing Qiu |
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Institution: | School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China |
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Abstract: | The lack of suitable lignin model compound limits the understanding of the characteristics of lignin, and hence hinders the efficient utilization of this kind of bioresource. A tetramer phenolic lignin model compound composed of 5-5, α-O-4 and β-5 linkages was prepared by a two-step of free radical reaction with hydrogen peroxide/horseradish peroxidase and S2O82- /Fe2+ as the initiator. Compared with enzymatic process, this synthetic process gives a higher yield of 33.8% within a shorter time. HRMS and 13C NMR spectroscopy show that synthesized model compound contains phenylpropane structure linked by 5-5, α-O-4 and β-5 bonds, which can mimic some chemical characteristics of lignin. |
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Keywords: | Lignin Model compound Tetramer Radical synthesis |
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