Radical synthesis of tetrameric lignin model compound  

作　　者：Xin-Ping Ouyang Yun Yang Guo-Dian Zhu Xue-Qing Qiu 

机构地区：[1]School of Chemistry and Chemical Engineering, South China University of Technology

出　　处：《Chinese Chemical Letters》2015年第8期980-982,共3页中国化学快报（英文版）

基　　金：financially supported by the National Basic Research Program of China(No.2012CB215302);the Major Program of National Natural Science Foundation of China(No.21376100)

摘　　要：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 S2O8^2- /Fe^2＋ 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.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 S2O8^2- /Fe^2＋ 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.

关 键 词：lignin initiator shorter bonds reserved mimic peroxidase peroxide phenolic acetone 

分 类 号：O636.2[理学—高分子化学]