79723-02-7

Usage

Uses

Tetramethylammonium hydrogen phthalate is used in electrolyte formulations.

InChI:InChI=1/C8H6O4.C4H12N/c9-7(10)5-3-1-2-4-6(5)8(11)12;1-5(2,3)4/h1-4H,(H,9,10)(H,11,12);1-4H3/q;+1/p-1

Upstream product

• 85-44-9 phthalic anhydride 
• 88-95-9 Phthaloyl dichloride 
• 373-68-2 tetramethylammonium fluoride 

Relevant academic research and scientific papers

The effect of basicity on fluorodenitration reactions using tetramethylammonium salts

The fluorodenitration of several nitroaromatics with tetramethylammonium salts has been found to be dependent on the basicity of the fluorinating species. Tetramethylammonium fluoride is highly basic and is capable of inducing H-D exchange in 1,3-dinitrobenzene, as well as deprotonating N,N- dimethylacetamide. Reaction of the fluoride with phthalic anhydride forms the bifluoride in situ. Tetramethylammonium bifluoride gives higher yields of the required fluoroaromatic, but slower reaction rates than the corresponding fluoride.

Process for producing quaternary salts

A process for producing quaternary salts of high purity is disclosed, comprising reacting a tertiary amine or phosphine with a carbonic acid diester to form a corresponding quaternary carbonate and further mixing it with an acid to perform decarboxylation. The quaternary salts thus obtained are useful compounds which can be used in wide fields as various catalysts, electrolytes, additives, medicaments, etc.