Ammonium salt having saccharin anion

Abstract

An ammonium salt having a saccharin anion, which is represented by formula (1), exhibits excellent thermal stability even though no halogen atom is contained therein. In the formula, each of R1-R4 independently represents an alkyl group having 1-4 carbon atoms or an alkoxyalkyl group that is represented by -(CH2)n-OR, wherein R represents an alkyl group having 1-4 carbon atoms, and n represents an integer of 1 or 2. Incidentally, any two of the R1-R4 moieties may combine with each other to form a ring together with a nitrogen atom.

Description

technical field [0001] The present invention relates to ammonium salts with saccharin anion. Background technique [0002] Conventionally known ionic liquids almost all contain halogen atoms such as fluorine atoms in their anions, and thus have problems in terms of environmental load and high production costs. Improvements to these are desired. [0003] In particular, when an ionic liquid containing a halogen atom is used as a reaction solvent, there are concerns about environmental problems at the time of leakage and disposal. [0004] In view of this, ionic liquids of the type not containing halogen atoms have also been developed (for example, refer to Patent Documents 1 and 2). Compared with ionic liquids containing halogen atoms such as fluorine atoms, they have high viscosity and low heat resistance (decomposition low temperature) etc. [0005] prior art literature [0006] patent documents [0007] Patent Document 1: Japanese Patent Laid-Open No. 2005-82534 [000...

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Problems solved by technology

[0004] In view of this, ionic liquids of the type not containing halogen atoms have also been developed (for example, refer to Patent Documents 1 and 2). Compared with ionic liquids containing halogen atoms such as fluorine atoms, they have high viscosity and low heat resistance (decomposition low temperature) etc.

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