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]-, 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 sulfur, X is a C1 to C30 organic residue, and wherein the following compounds (I) are disclaimed:tetramethylammonium monomethyloxalate methyltri(alkyl)ammonium monomethyloxalate trimethyl(1-hydroxyethyl)ammonium monomethyloxalate methyltriethylammonium monomethyloxalate tetraethylammonium monomethyloxalate n-propyltriethylammonium mono-n-propyloxalate n-butyltriethylammonium mono-n-butyloxalate benzyltriethylammonium monobenzyloxalate cyclohexyldimethylammonium monomethyloxalate dimethyl-phenylammonium monomethyloxalate. Tetrabutylammonium monomethyloxalate N-methylpyridinium monomethyloxalate N-ethylpyridinium monoethyloxalate N-n-propylpyridinium mono-n-propyloxalate N-n-butylpyridinium mono-n-butyl-oxalate N-benzylpyridinium monobenzyloxalate N-methyl-isochinolinium monomethyloxalate N-ethyl-isochinolinium monoethyloxalate N-n-propyl-isochinoliniummono-n-propyloxalate N-n-butyl-isochinolinium mono-n-butyloxalate N-benzyl-isochinolinium monobenzyloxalate.