82777-30-8

Basic information

• Product Name: ethyl-(3-p-tolylsulphonylpropyl)-p-tolylsulphonium benzenesulphonate
• Synonyms: ethyl-(3-p-tolylsulphonylpropyl)-p-tolylsulphonium benzenesulphonate
• CAS NO: 82777-30-8
• Molecular Weight: 506.708
• Mol File: 82777-30-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: ethyl-(3-p-tolylsulphonylpropyl)-p-tolylsulphonium benzenesulphonate(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl-(3-p-tolylsulphonylpropyl)-p-tolylsulphonium benzenesulphonate(82777-30-8)
• EPA Substance Registry System: ethyl-(3-p-tolylsulphonylpropyl)-p-tolylsulphonium benzenesulphonate(82777-30-8)

Safety Data

• Hazardous Substances Data: 82777-30-8(Hazardous Substances Data)

Upstream product

• 106-45-6 para-thiocresol 
• 5755-77-1 3-bromopropyl p-tolyl sulphone 
• 368-39-8 triethyloxonium fluoroborate 
• 934-55-4 potassium benzenesulfonate 
• 82777-28-4 C₁₇H₂₀O₂S₂ 

Downstream Products

• 622-63-9 ethyl p-tolyl sulfide 
• 91765-54-7 2-ethoxy-propyl p-tolyl sulphone 

Relevant articles and documents

Intramolecular Reactions. Part 12. Ring Size and Leaving Group Effects on Inter- and Intra-molecular Nucleophilic Substitution by Carbanions

In cyclisations of aryl ο-halogenoalkyl ketones to aryl cycloalkyl ketones with base, cyclopropanes are formed up to 23000 times faster than cyclopentanes.Hydrogen-deuterium exchange experiments and very low bromide-chloride ratios (1.9) for three-membered ring formation are consistent with rate-determining deprotonation of the ketone.By contrast, in five-membered ring formation, hydrogen-deuterium exchange adjacent to the carbonyl group occurs much faster than cyclisation and the chloride-bromide ratio is 'normal' at 99.In formation of arylsulphonylcyclopropanes from arylsulphonylpropyl arenesulphonates, the Hammett ρ value for the leaving group is +1.7, and for intermolecular substitution by bis-sulphonyl stabilised carbanions, +1.2.Attempts to obtain ρLG values for five-membered ring formation were frustrated by competing intermolecular reactions.The results are discussed against the background of previous work on ring formation by intramolecular nucleophilic substitution.