20443-84-9

Basic information

• Product Name: 4-bromophenyl benzenesulfonate
• Synonyms: Benzenesulfonic acid, p-bromo-phenyl ester
• CAS NO: 20443-84-9
• Molecular Formula: C₁₂H₉BrO₃S
• Molecular Weight: 313.1671
• Mol File: 20443-84-9.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 422.5°C at 760 mmHg
• Flash Point: 209.3°C
• Density: 1.571g/cm³
• Vapor Pressure: 5.91E-07mmHg at 25°C
• Refractive Index: 1.617
• CAS DataBase Reference: 4-bromophenyl benzenesulfonate(CAS DataBase Reference)
• NIST Chemistry Reference: 4-bromophenyl benzenesulfonate(20443-84-9)
• EPA Substance Registry System: 4-bromophenyl benzenesulfonate(20443-84-9)

Safety Data

• Hazardous Substances Data: 20443-84-9(Hazardous Substances Data)

Upstream product

• 106-41-2 4-bromo-phenol 
• 873-55-2 sodium benzenesulfonate 
• 98-09-9 benzenesulfonyl chloride 
• 4358-63-8 phenyl benzenesulfonate 

Downstream Products

• 106-41-2 4-bromo-phenol 
• 7507-41-7 4-benzenesulfonyloxy-benzoic acid 

Relevant articles and documents

Practical Electro-Oxidative Sulfonylation of Phenols with Sodium Arenesulfinates Generating Arylsulfonate Esters

A practical and sustainable synthesis of arylsulfonate esters has been developed through electro-oxidation. This reaction employed the stable and readily available phenols and sodium arenesulfinates as the starting materials and took place under mild reaction conditions without additional oxidants. A wide range of arylsulfonate esters including those bearing functional groups were produced in good to excellent yields. This reaction could also be conducted at a gram scale without a decrease of reaction efficiency. Those results well demonstrated the potential synthetic value of this reaction in organic synthesis.

KINETICS OF SULFONYLATION OF SUBSTITUTED PHENOLS IN THE PRESENCE OF TRIETHYLAMINE

The rate constants for the sulfonation of meta- and para-substituted phenols by benzenesulfonyl chloride in the presence of triethylamine in benzene were determined.The dependence of the rate constants on the Hammett ? constants has a V-shaped form.The effect of the leaving group was investigated, and the kinetic isotope effect was determined.The possibility of reaction by two catalytic paths (nucleophilic and general base catalysis) is discussed, and proposals were made about the reaction mechanism.