3744-11-4

Usage

Uses

Used in Pharmaceutical Industry:
Sulfonium, tris(4-methylphenyl)-, bromide is utilized as a catalyst for the synthesis of pharmaceutical compounds, facilitating the transfer of alkyl and aryl groups in reactions to achieve desired chemical transformations. Its application in this industry is crucial for the production of various medicinal agents.
Used in Agricultural Chemicals Industry:
In the agricultural sector, this sulfonium salt is employed as a catalyst in the synthesis of agricultural chemicals, enabling the efficient transfer of functional groups to create effective compounds for crop protection and enhancement.
Used in Dye Production:
Sulfonium, tris(4-methylphenyl)-, bromide is used as a catalyst in the production of dyes, where its ability to facilitate group transfer reactions is essential for creating a diverse range of colorants used in various applications.
Used in Polymer Synthesis:
This chemical compound is also used as a catalyst in the synthesis of polymers, contributing to the development of materials with specific properties for use in different industries, such as plastics, textiles, and coatings.
Used in Specialty Chemicals Production:
Sulfonium, tris(4-methylphenyl)-, bromide is employed in the production of specialty chemicals, where its catalytic properties are harnessed to create unique chemical entities for specific applications in various fields.

Upstream product

• 106-38-7 para-bromotoluene 
• 1774-35-2 di(p-tolyl) sulfoxide 
• 4294-57-9 para-methylphenylmagnesium bromide 

Downstream Products

• 1579-40-4 1,1'-oxybis(4-methyl-benzene) 
• 620-94-0 di-(p-tolyl)sulfane 
• 108-88-3 toluene 

Relevant academic research and scientific papers

Facile method for the preparation of triarylsulfonium bromides using Grignard reagents and chlorotrimethylsilane as an activator

Triarylsulfonium bromides were synthesized by the reaction of diaryl sulfoxides with aryl Grignard reagents in the presence of TMSC1 followed by treatment with HBr aqueous solution. Triarylsulfonium bromides bearing three identical substituents on sulfur atom were synthesized by the treatment of dimethyl sulfite or thionyl chloride with 5 equivalents of Grignard reagent in the presence of TMSC1.

Photochemistry of triarylsulfonium salts

The photolysis of triphenylsulfonium, tris(4-methylphenyl)sulfonium, tris(4-chlorophenyl)sulfonium, several monosubstituted (4-F, 4-Cl, 4-Me, 4-MeO, 4-PhS, and 4-PhCO), and disubstituted (4,4′-Me2 and 4,4′-(MeO)2) triphenylsulfonium salts was examined in solution. It was found that direct irradiation of triphenylsulfonium salts produced new rearrangement products, phenylthiobiphenyls, along with diphenyl sulfide, which had been previously reported. Similarly, the triarylsulfonium salts, with the exception of the [4-(phenylthio)phenyl]diphenylsulfonium salts, gave the new rearrangement products. The mechanism for direct photolysis is proposed to occur from the singlet excited state to give a predominant heterolytic cleavage along with some homolytic cleavage. The heterolytic cleavage gives phenyl cation and diphenyl sulfide, whereas homolytic cleavage gives the singlet phenyl radical and diphenylsulfinyl radical cation pair. These pairs of intermediates then produce the observed photoproducts by an in-cage recombination mechanism and also by reactions with the solvent. The effect of solvent viscosity, solvent polarity, anion, and aryl substituent was examined. The triplet sensitization of the sulfonium salts was also investigated. In contrast to previous reports, the triplet state of the sulfonium salt is labile, leading to a triplet geminate radical pair of phenyl radical and diphenylsulfinyl radical cation. These species ultimately form benzene and diphenyl sulfide as products. Direct photolysis of the [4-(phenylthio)phenyl]diphenylsulfonium salt, gave exclusively diphenyl sulfide, benzene, and acid and decomposes via the triplet excited state.