The driving effect of substituent size changes on reaction: a novel reaction for direct production of triacetylglycerol from oils and fats,Green Chemistry

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The driving effect of substituent size changes on reaction: a novel reaction for direct production of triacetylglycerol from oils and fats
Green Chemistry ( IF 9.3 ) Pub Date : 2020-09-03 , DOI: 10.1039/d0gc02485f
Lijuan Su _{1,

2,

3,

4,

5} , Xianglin Hou _{1,

2,

3,

4,

5} , Xiaojing Cui _{5,

6,

7,

8,

9} , Xingchen Liu _{5,

6,

7,

8,

9} , Hongliang Wang _{5,

10,

11,

12} , Jiaojiao Zhang _{1,

2,

3,

4,

5} , Jinlong Li _{1,

2,

3,

4,

5} , Yingxiong Wang _{1,

2,

3,

4,

5} , Tiansheng Deng _{1,

2,

3,

4,

5}

Affiliation

The existing triacetylglycerol (TAG) production method involves esterification of oil (fat)-derived glycerol with acetic acid, forming a mixture of mono-, di- and tri- acetylglycerols. Herein, a new acyl exchange reaction is developed to directly and efficiently produce TAG from waste oils and fats by the driving effect of substituent size changes. Small-sized acetic acids easily replace large long-chain fatty acids of oils. This release in the intramolecular tension and diminishing of steric hindrance make TAG both thermodynamically and dynamically the most favorable product. Pure TAG was obtained with a high yield of 94.9%.

中文翻译：

取代基大小变化对反应的驱动作用：从油脂直接生产三乙酰甘油的新型反应

现有的三乙酰基甘油（TAG）生产方法涉及将油脂（脂肪）衍生的甘油与乙酸酯化，形成单，二和三乙酰基甘油的混合物。本文中，开发了新的酰基交换反应，以通过取代基尺寸变化的驱动作用直接和有效地从废油脂中生产TAG。小型乙酸很容易替代油中的大长链脂肪酸。分子内张力的这种释放和空间位阻的减少使TAG在热力学和动力学上均成为最有利的产品。以94.9％的高产率获得了纯TAG。

更新日期：2020-10-05

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