IONIC LIQUIDS BASED ON OXALIC ACID MONO ESTERS

摘要

Monosubstituted oxalic acid derivatives of the general formula (I); [A]⁺[O—C(O)—C(O)—O—X⁻  (I);Wherein the meaning is for[A]⁺ a cation made from an organic moiety A having a formally positively charged heteroatom selected from the group consisting of nitrogen, phosphorus and sulfurX is a C1 to C30 organic residueand wherein the following compounds (I) are disclaimed:Tetramethylammonium monomethyloxalateMethyltri(alkyl)ammonium monomethyloxalateTrimethyl(1-hydroxyethyl)ammonium monomethyloxalateMethyltriethylammonium monomethyloxalateTetraethylammonium monomethyloxalaten-Propyltriethylammonium mono-n-propyloxalaten-Butyltriethylammonium mono-n-butyloxalateBenzyltriethylammonium monobenzyloxalatecyclohexyldimethylammonium monomethyloxalateDimethyl-phenylammonium monomethyloxalate.Tetrabutylammonium monomethyloxalateN-methylpyridinium monomethyloxalateN-ethylpyridinium monoethyloxalateN-n-propylpyridinium mono-n-propyloxalateN-n-butylpyridinium mono-n-butyloxalateN-benzylpyridinium monobenzyloxalateN-methyl-isochinolinium monomethyloxalateN-ethyl-isochinolinium monoethyloxalateN-n-propyl-isochinolinium mono-n-propyloxalateN-n-butyl-isochinolinium mono-n-butyloxalateN-benzyl-isochinolinium monobenzyloxalate.