57878-21-4

Basic information

• Product Name: Benzeneselenenyl chloride, 4-bromo-
• CAS NO: 57878-21-4
• Molecular Formula: C6H4BrClSe
• Molecular Weight: 270.415
• Mol File: 57878-21-4.mol

Chemical Properties

• CAS DataBase Reference: Benzeneselenenyl chloride, 4-bromo-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzeneselenenyl chloride, 4-bromo-(57878-21-4)
• EPA Substance Registry System: Benzeneselenenyl chloride, 4-bromo-(57878-21-4)

Safety Data

• Hazardous Substances Data: 57878-21-4(Hazardous Substances Data)

Upstream product

• 106-37-6 1.4-dibromobenzene 
• 54045-44-2 Trimethyl-(p-bromphenylseleno)-silan 
• 54045-50-0 4-bromobenzeneselenol 
• 62593-86-6 Se-(4-bromophenyl) benzoselenoate 
• 20541-48-4 1,2-bis(4-bromophenyl)diselenide 

Downstream Products

• 120166-38-3 1-chloro-1-p-chlorophenoxy-2-(p-bromophenylseleno)ethane 
• 120166-39-4 C₁₄H₁₁BrClNO₃Se 
• 120166-42-9 C₁₄H₁₁Br₂ClSe₂ 
• 120166-41-8 C₁₄H₁₁Br₂ClSSe 
• 57878-10-1 β-(4-bromophenylseleno)ethyl chloride 
• 1217597-18-6 2-[(1Z)-2-(4-bromophenylselanyl)-3-chloro-1-propenyl]-5,5-dimethyl-1,3,2-dioxaphosphorinane 2-oxide 
• 1217597-17-5 diethyl [(Z)-2-(4-bromophenylselanyl)-3-chloro-1-propenyl]phosphonate 
• 62608-75-7 p-Bromphenylselenchlorid 
• 57878-16-7 4-bromophenyl vinyl selenide 
• 57991-89-6 1-Bromo-4-((E)-2-chloro-vinylselanyl)-benzene 
• 120166-40-7 C₁₄H₁₁BrCl₂SSe 
• 120166-48-5 1-chloro-1-acetoxy-2-(p-bromophenylseleno)ethane 
• 62608-72-4 p-Bromphenyl(tert.butoxy)selendichlorid 

Relevant articles and documents

Reaction of Areneselenyl Chlorides and alkenes. An example of Nucleophilic Displacement at Bivalent Selenium

The effect of substituents in the phenyl ring of both the electrophile and the alkene has been studied in the reaction of areneselenyl chlorides and (E)- and (Z)-1-phenylpropenes.Electron-donating groups in both phenyl rings enhance the rate of reaction.Viewing this reaction as a nucleophilic displacement at bivalent selenium leads to a model that allows the possibility of reaction by a continuum of mechanisms.These mechanisms differ only in the relative amounts of C-Se bond making and Se-Cl bond breaking in the rate-determining transition state.From our data, it is concluded that C-Se bond making lags behind Se-Cl bond breaking in the rate determining transition state.