Understanding and Suppression of Side Reaction during Transesterification of Phenolic Hydroxyl Groups of Lignin with Vinyl Ester

被引：5
|
作者：
Suzuki, Shiori [1 ,2 ]
Ishikuro, Akinari [2 ]
Hamano, Yosuke [2 ]
Hirose, Daisuke [2 ]
Wada, Naoki [2 ]
Takahashi, Kenji [2 ]
机构：
[1] Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Bunkyo Ku, 1-1-1 Yayoi, Tokyo 1138657, Japan
[2] Kanazawa Univ, Fac Nat Syst, Inst Sci & Engn, Kakuma Machi, Kanazawa, Ishikawa 9201192, Japan
来源：
CHEMISTRY LETTERS | 2020年 / 49卷 / 08期
基金：
日本科学技术振兴机构;
关键词：
Transesterification; Lignin; Ionic liquids; IONIC LIQUIDS; CATALYTIC-ACTIVITY; MIXED ANHYDRIDE; CELLULOSE; ESTERIFICATION; ACETYLATION; DISSOLUTION; INSIGHT;
D O I：
10.1246/cl.200202
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A catalytic transesterification reaction on phenolic hydroxyl groups by a carboxylate-type ionic liquid, 1-ethyl-3-methylimidazolium p-anisate ([Emim][OAn]), was investigated using a model reaction with phenol and vinyl propionate. Undesirable contamination of the ester group formed on the phenol with an acyl group derived from the acyl anion in the [Emim] [OAn] was effectively suppressed. This catalytic reaction was applied to Kraft lignin, and the desired esterification was successfully promoted on the hydroxyl groups with a conversion of up to 94 mol %.
引用
收藏
页码：900 / 904
页数：5
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