4189-82-6

Upstream product

• 945-51-7 1,1'-sulfinylbisbenzene 
• 4294-57-9 para-methylphenylmagnesium bromide 
• 106-38-7 para-bromotoluene 
• 3699-01-2 4-tolyl phenyl sulfide 
• 24702-37-2 S-(p-tolyl)-S-phenyl-N-(p-tolylsulfonyl)sulfilimine 

Downstream Products

• 1135815-31-4 C₁₅H₁₉F₂O₇S^(1-)*C₁₉H₁₇S⁽¹⁺⁾ 
• 1153716-27-8 C₉H₉F₂O₈S₂^(1-)*C₁₉H₁₇S⁽¹⁺⁾ 
• 1112983-16-0 C₉H₇F₂O₈S^(1-)*C₁₉H₁₇S⁽¹⁺⁾ 

Relevant academic research and scientific papers

PROCESS FOR PRODUCING TRIARYLSULFONIUM SALT

An object of the present invention is to provide a method for effectively producing a triarylsulfonium salt having a structure that only one aromatic ring of three aromatic rings on the cation portion thereof is different from the other two aromatic rings (hereinafter, abbreviated as a triarylsulfonium salt relating to the present invention) in a high yield without forming any byproduct. The present invention relates to a method for producing a triarylsulfonium salt represented by the general formula [4]: wherein, two R1's represent each hydrogen atom, halogen atom, alkyl group, haloalkyl group having 1 to 4 carbon atoms, alkoxy group, acyl group, hydroxyl group, amino group, nitro group or cyano group; R represents an aryl group which may have a substituent selected from a halogen atom, an alkyl group, a haloalkyl group having 1 to 4 carbon atoms, an alkoxy group, an alkylthio group, a N-alkylcarbamoyl group and a carbamoyl group, and the above substituent is different from one represented by the above R1; and A1 represents a strong acid residue, comprising reacting a diaryl sulfoxide represented by the general formula [1]: wherein, R1 represents the same as above, and an aryl Grignard reagent represented by the general formula [2]: ????????RMgX?????[2] wherein, X represents a halogen atom; R represents the same as above, in the presence of an activator with high affinity for oxygen of 3 to 7.5 equivalents relative to the above diaryl sulfoxide, and then reacting the resultant reaction mixture with a strong acid represented by the general formula [3]: ????????HA1?????[3] wherein, A1 represents the same as above, or a salt thereof.

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.