作者:Amber Onorato、Christopher Pavlik、Michael A. Invernale、Ian D. Berghorn、Gregory A. Sotzing、Martha D. Morton、Michael B. Smith
DOI:10.1016/j.carres.2011.04.017
日期:2011.9
The polymer PEDOT+ (1 or 2) mediates a cyclodehydration reaction with alditols 3, 5, 7, 9, in hydrocarbon solvents, to give cyclic ethers 4, 6, 8, or 10, respectively, in high yield with a trivial isolation protocol. Polymers 1 or 2 also mediate the cyclodehydration of ketohexoses such as D-fructose, but not aldohexoses, to the important industrial intermediate 5-hydroxymethylfurfural (17), under milder conditions when compared to reactions mediated by mineral acids. A cascade reaction with ketohexoses is observed in toluene via cyclodehydration followed by Friedel-Crafts alkylation of the initially formed benzylic alcohol to give 16. (C) 2011 Elsevier Ltd. All rights reserved.