Efficient glycosydation and/or esterification of d-glucuronic acid and its 6,1-lactone under solvent-free microwave irradiation
摘要:
2,3,4-Tri-O-acetyl-D-glucurono-6,1-lactone was obtained 'one-pot' from D-glucuronic acid. The lactone opening with different alcohols in the presence of a variety of catalysts was studied. All reactions were performed under microwave irradiatio in solvent-free conditions. (c) 2007 Elsevier Ltd. All rights reserved.
Monomode microwave-assisted coupling of d-glucuronicacid with alcohols, in the presence of various impregnated acid catalysts, was successfully performed, affording in almost quantitative yields the corresponding monosubstituted β-d-glucofuranosidurono-6,3-lactones in less than 10 min at 85 °C. This study evidences the synergy of microwaves and impregnated acid catalysts as a fast and clean strategy
单模微波辅助的偶联d与醇-glucuronic酸,在各种浸渍的酸催化剂的存在下,被成功地执行,以几乎定量的产率得到相应的单取代的β- d -glucofuranosidurono -6,3-内酯在小于10分钟在85°C下。这项研究证明了微波和浸渍酸催化剂在碳水化合物化学领域的协同作用是一种快速,清洁的策略。