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 %.

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收藏

页码：900 / 904

页数：5

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