Synthesis of Fatty Acetoacetates Under Microwave Irradiation Catalysed by Sulfamic Acid in a Solvent-Free System
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- 作者：Andressa C. H. Weber ; Thaís C. Batista…
- 关键词：Castor oil ; Renewable resources ; Transesterification reaction ; 1 ; 3 ; dicarbonyl compounds ; Microwave ; assisted
- 刊名：Journal of the American Oil Chemists' Society
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：93
- 期：10
- 页码：1399-1406
- 全文大小：605 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Industrial Chemistry and Chemical Engineering
Analytical Chemistry
Chemistry
Biotechnology
Biomaterials
Agriculture - 出版者：Springer Berlin / Heidelberg
- ISSN：1558-9331
- 卷排序：93
文摘
The 1,3-dicarbonyl compounds are important building blocks to obtain products with various biological activities and technological applications. In this work, we used a simple transesterification method to develop fatty acetoacetates in a solvent-free medium using a green catalyst, sulfamic acid (NH2SO3H), under microwave irradiation. The experimental results demonstrate good yields in a short reaction time (13 min), which makes this method an efficient approach to synthesize fatty acetoacetates from a wide range of saturated, unsaturated, and polyunsaturated long chain fatty alcohols, and ricinoleic derivatives. Experiments of recycling of the catalyst were performed and no decrease in catalytic activity of sulfamic acid was observed.