7781-70-6

Basic information

• Product Name: Benzene, 1,1'-[1,2-bis(bromomethyl)-1,2-ethenediyl]bis-
• Synonyms: 1,4-dibromo-2,3-diphenyl-2-butene;1,4-dibromo-2,3-diphenyl-but-2-ene;1,4-Dibrom-2,3-diphenyl-but-2-en
• CAS NO: 7781-70-6
• Molecular Formula: C16H14Br2
• Molecular Weight: 366.095
• Mol File: 7781-70-6.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Benzene, 1,1'-[1,2-bis(bromomethyl)-1,2-ethenediyl]bis-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1,1'-[1,2-bis(bromomethyl)-1,2-ethenediyl]bis-(7781-70-6)
• EPA Substance Registry System: Benzene, 1,1'-[1,2-bis(bromomethyl)-1,2-ethenediyl]bis-(7781-70-6)

Safety Data

• Hazardous Substances Data: 7781-70-6(Hazardous Substances Data)

Upstream product

• 2548-47-2 2,3-diphenyl-1,3-butadiene 
• 782-05-8 (Z)-2,3-diphenyl-2-butene 
• 782-06-9 (E)-2,3-diphenylbutene 
• 4217-65-6 (R,S)-2,3-diphenylbutane-2,3-diol 
• 2510-98-7 2,3-diphenyl-2-butene 
• 5635-43-8 C₁₆H₁₆O₂ 
• 4808-48-4 2,3-diphenylmaleic anhydride 
• 618-34-8 1-chlorostyrene 
• 13466-30-3 (1-phenylethylidene)hydrazine 
• 98-86-2 acetophenone 

Downstream Products

• 70-11-1 α-bromoacetophenone 

Relevant articles and documents

Formal [5+1] annulation reactions of dielectrophilic peroxides: Facile access to functionalized dihydropyrans

A general [5+1] annulation reaction, which utilized 4-bromo- or 4-mesyloxy-but-2-enyl peroxides as unique five-atom bielectrophilic synthons to participate in the C-C and the subsequent umpolung C-O bond-forming reactions with C1 nucleophiles, has been developed for the facile synthesis of 2,2-disubstituted dihydropyrans in high yields under mild basic conditions. The dihydropyrans, which are readily prepared on a gram scale by this new method, can be flexibly transformed into the biologically important tetrahydropyrans and pyranones in 1-2 steps.