66788-58-7

Usage

Uses

Used in Organic Synthesis:
4-Bromo-benzenesulfonic acid potassium salt is used as a reagent in organic synthesis for its ability to facilitate specific chemical reactions, contributing to the formation of desired organic compounds.
Used in Catalyst Applications:
In various chemical reactions, 4-Bromo-benzenesulfonic acid potassium salt is used as a catalyst to increase the rate of these reactions without being consumed in the process, making it an efficient component in industrial chemical production.
Used in Pharmaceutical Production:
4-Bromo-benzenesulfonic acid potassium salt is utilized in the production of pharmaceuticals, playing a crucial role in the synthesis of certain drugs, thereby contributing to the development of new medications.
Used in Dye Manufacturing:
4-Bromo-benzenesulfonic acid potassium salt is also used in the manufacturing of dyes, where its chemical properties are leveraged to produce a range of colorants for various applications.
Used in Wastewater Treatment:
4-Bromo-benzenesulfonic acid potassium salt is employed in the treatment of wastewater, where it can help in the removal of contaminants, thus playing a role in environmental protection.
Used as a Corrosion Inhibitor in Industrial Processes:
In industrial settings, 4-Bromo-benzenesulfonic acid potassium salt serves as a corrosion inhibitor, protecting materials and equipment from the damaging effects of corrosive agents, thereby extending their lifespan and ensuring operational efficiency.

InChI:InChI=1/C6H5BrO3S.K/c7-5-1-3-6(4-2-5)11(8,9)10;/h1-4H,(H,8,9,10);/q;+1/p-1

Upstream product

• 98-58-8 4-bromobenzenesulfonyl chloride 
• 108-86-1 bromobenzene 
• 58816-79-8 1,2,2,3,3,4,4,5,5,6,6-undecafluorocyclohexanecarbonyl chloride 
• 13939-73-6 2-(pyrrolidin-(2E/2Z)-ylidene)acetonitrile 
• 33843-80-0 perfluorocyclohexancarbohydrazide 
• 127-08-2 potassium acetate 
• 6588-63-2 1,2,2,3,3,4,4,5,5,6,6-undecafluorocyclohexanecarbonyl fluoride 

Downstream Products

• 623-26-7 terephthalonitrile 

Relevant academic research and scientific papers

Square-planar 2-toluenido(triphenylphosphane)nickel(II) complexes containing bidentate N,O ligands: An example of planar chirality

Nickel(II) complexes comprising electronically delocalised N,O-chelating ligands are active catalysts in the copolymerisation of carbon monoxide and ethene. Elucidating the mechanism of catalysis presupposes the basic understanding of the intramolecular flexibility of such transition metal complexes. Several nickel(II) complexes with or without planar chirality were synthesised and characterised by NMR spectroscopic techniques and X-ray diffraction.

On the positional reactivity order in the sulfur trioxide sulfonation of benzene, halogenobenzenes, halogenonaphthalenes, and chloroanthracenes

The reaction of sulfur trioxide with benzene, the four halogenobenzenes, and six halogenonaphthalenes in dichloromethane as solvent, and with four chlorinated anthracenes in nitromethane as solvent, has been studied by analysis of the resulting mixture of the sulfo derivatives with 1H NMR. The sulfonation of benzene yields initially benzenesulfonic acid and subsequently the 1,3-disulfonic acid (1,3-S2). The initial sulfonation of the four halogenobenzenes yields ? 98% of the 4-S. Their subsequent sulfonation gives the 2,4-S2 and in the case of fluoro- and iodobenzene also the 2,4,6-S3. Monosulfonation of 1-fluoronaphthalene yields only the 4-S, whereas the three other 1-halogenonapthalenese yield in addition some 5-S. Further sulfonation on any of the four 1-halogenonaphthalene-4-sulfonic acids yields a mixture of the 2,4-S2 and 4,7-S2, and eventually also some 2,4,7-S3, whereas the 1-halogeno-5-sulfonic acids give the corresponding 5,7-S2. Sulfonation of 2-chloro- and 2-bromonaphthalene yields initially 85% 8-S and 15% 4-S, which are subsequently converted into the 6,8-S2 and 4,7-S2, respectively. On reaction with 1.0 mol-equiv. of SO3, 2-chloroanthracene gives the 9-S, and 9-chloroanthracene gives an 18:82 mixture of the 4-S and 10-S. Both 1,5- and 1,8-dichloroanthracene yield initially the 4-S and subsequently the 4,8-S2 and 4,5-S2, respectively.

The acetolysis of exo- and endo-5,6-Dimethylidene-2-Norbornyl p-Bromobenzenesulfonates and of their Optically Active and Deuterium-Labelled Derivatives

The buffered (AcOK) acetolyses of exo (11) and endo-5,6-dimethylidene-2-norbornyl brosylate (12) yielded exo-5,6-dimethylidene-2-norbornyl (16) and (3-methylidene-2-nortricyclyl)methyl acetates (18).Endo-5,6-dimethylidene-2-norbornyl (17) and 2-methylidene-3-tricyclo3,6>octyl acetates (20) could not be detected.The titrimetric rate constants of the acetolysis of 11 (kt(exo)=(4.49+/-0.02)E-3/s at 25 deg C, ΔH(excit.)=23.6+/-0.7 kcal/mol ΔS(excit.)=0.7+/-2 cal/mol*K) and 12 (kt(endo)=(1.9+/-0.08)E-9/s at 25 deg C, ΔH(excit.)=27+/-1kcal/mol, ΔS(excit.)=-8+/-2.5 cal/mol*K)were measured and compared with the polarimetric rateconstants (ka/kt(exo)=6.8at 25 deg C, ka/kt(endo)=1.0 at 121 deg C) of the buffered acetolyses of the optically active brosylates (+)-11 and (+)-12.Neither a common-ion (KOBs) nor a special ion effect (LiClO4) on kt(exo) could be detected, although external return might well intervene as some exo-5,6-dimethylidene-2-norbornyl tosylate (21) was formed upon solvolysis in the presence of KOTs.Acetolysis of (+)-11 yielded completely racemized products, whereas (+)-12 led to incomplete racemization.The buffered acetolysis of exo (3exo-D)-5,6-dimethylidene-2-norbornyl brosylate (24) furnished (3exo-D)-(26: 37.5percent), exo-(7syn-D)-5,6-dimethylidene-2-norbornyl (27: 37.5percent) and methyl acetates (28:25percent).The acetolysis f endo(2exo-D)-5,6-dimethylidene-2-norbornyl brosylate(25) yielded (2endo-D)(29:54percent), exo-(1-D)-5,6-dimethylidene-2-norbornyl (30:36percent) and ,(6-D)-3-methylidene-2-nortricyclyl>methyl acetates (31:10percent).Product analysis and deuterium label distribution was established by a combination of GC.,1H-NMR.,2H-(1H)-NMR. and MS techniques.The results are rationalized by involking anchimerically assisdted ionization of the exo brosylate 11 to symmetrical ion-pairs cyclopropyl carbinyl cation intermediates) which undergo internal (and probably also internal) return.Acetolyses of the endo-brosylate 12 is not anchimetrically assisted and leads initially to non-symmetrical ion pairs.These evolve to symmetrical ion pair intermediates or, to a minor extent, are intercepted by solvent.