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Eco‐conception of Highly Salt‐Tolerant Alkyl Ether Carboxylate Hydrotropes with a Glyceryl Spacer
Author(s) -
Herbinski Aurélien,
Illous Estelle,
Métay Estelle,
Ontiveros Jesus F.,
Aubry JeanMarie,
Lemaire Marc
Publication year - 2022
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202200274
Subject(s) - chemistry , carboxylate , alkyl , ethylene glycol , hydrogenolysis , organic chemistry , ether , saponification , alcohol , catalysis
New alkyl ether carboxylates with a glyceryl spacer instead of ethylene glycol units have been synthesised using environmentally friendly methodology. A cascade synthesis of acetalisation and hydrogenolysis was developed to obtain products containing an alkyl chain linked to a glycerol unit bearing a polar carboxylate head. These products were methylated by using trimethyl phosphate to observe the influence of a free or methoxylated alcohol on the physicochemical properties. Finally, saponification gave the carboxylate anionic group of the new hydrotropes. Studying the amphiphilicity, the tolerance to sodium and calcium ions, and the solubilising power of these bio‐based ionic/nonionic hydrotropes has shown that they exhibit significantly improved application properties compared to similar petro‐based hydrotropes.