88658-20-2

Upstream product

• 536-57-2 p-toluene sulfinic acid 
• 1689-82-3 4-hydroxyazobenzene 
• 1146-43-6 N-(4-hydroxyphenyl)-4-methylbenzenesulfonamide 
• 824-79-3 sodium 4-methylbenzenesulfinate 
• 37051-70-0 4-methyl-N-(4-oxocyclohexa-2,5-dien-1-ylidene)benzenesulfonamide 

Downstream Products

• 92029-52-2 4-Amino-2-(p-toluolsulfonyl)-phenol 
• 10371-01-4 2-[(4-methylphenyl)sulfonyl]phenol 

Relevant academic research and scientific papers

Reaction of some N-substituted 1,4-benzoquinone imines with sodium arenesulfinates

N-Arylsulfonyl, N-aroyl, and N-[arylsulfonylimino(phenyl)methyl] derivatives of 1,4-benzoquinone imine reacted with sodium arenesulfinates to give 1,4-, 1,6-, and 6,1-addition products which were formed according to two concurrent paths: direct nucleophil

Electrochemical oxidation of aminophenols in the presence of benzenesulfinate

The anodic oxidation of aminophenols and their amino-protected derivatives was investigated by using cyclic voltammetry and preparative electrolysis methods. The results showed that like the catechols the amino-protected aminophenol could also undergo Michael addition, and that the benzenesulfonate group was regioselectively introduced at the meta-position of the amino group. In contrast, the expected products were not formed from the oxidation of unprotected aminophenols. Finally, a reaction mechanism is proposed.