Deep Eutectic and Low-Melting Mixtures

• Published in: Bio-Based Solvents pp. 83 - 114
• Main Authors: Oliveira Vigier, Karine, García‐Álvarez, Joaquín
• Format: Book Chapter
• Language: English
• Published: United Kingdom John Wiley & Sons, Incorporated 2017; John Wiley & Sons, Ltd
• Subjects: 5‐hydroxymethyl furfural; carbohydrate conversion; choline chloride; deep eutectic solvents; low‐melting mixtures; metal extraction; metal‐catalysed organic reactions
• ISBN: 1119065399; 9781119065395
• DOI: 10.1002/9781119065357.ch4

This chapter covers part of the progress in the area of deep eutectic solvents (DESs) and low‐melting mixtures (LMMs), providing a general overview of their application as green solvents in the fields of: metal‐catalysed organic reactions; and carbohydrate conversion and extraction processes. The importance of this subject is also increasing in other fields of chemistry, ranging from electrochemistry and organic synthesis to material sciences or metal extraction. LMMs and DESs can be used for metal‐catalysed organic reactions such as redox isomerization of allylic alcohols into saturated carbonyl compounds, cycloisomerizations of unsaturated organic substrates, Diels‐Alder cycloadditions and the conversion of biomass to furanic compounds. In this context, LMMs and DESs based mostly on ChCl were investigated in the synthesis of 5‐hydroxymethyl furfural (HMF) from carbohydrates. The chapter also investigates the synthesis of furfural from the hemicellulosic part of lignocelluloses in the presence of eutectic mixture and discusses the obtained results.