239136-20-0

Basic information

• Product Name: 1,1-dibromo-2-p-(bromomethyl)phenyl-3,3,3-trifluoropropene
• CAS NO: 239136-20-0
• Molecular Weight: 422.865
• Mol File: 239136-20-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,1-dibromo-2-p-(bromomethyl)phenyl-3,3,3-trifluoropropene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1-dibromo-2-p-(bromomethyl)phenyl-3,3,3-trifluoropropene(239136-20-0)
• EPA Substance Registry System: 1,1-dibromo-2-p-(bromomethyl)phenyl-3,3,3-trifluoropropene(239136-20-0)

Safety Data

• Hazardous Substances Data: 239136-20-0(Hazardous Substances Data)

Upstream product

• 4294-57-9 para-methylphenylmagnesium bromide 
• 394-59-2 2,2,2-trifluoro-1-(p-tolyl)ethanone 
• 195985-21-8 1,1-dibromo-3,3,3-trifluoro-2-p-tolylpropene 

Downstream Products

• 203257-18-5 (Z)-1,1,1,6,6,6-hexafluoro-2,5-di-p-methoxycarbonylphenyl-2,3,4-hexatriene 
• 195985-66-1 4-(2,2-dibromo-1-trifluoromethylvinyl)benzoic acid 
• 195985-57-0 4-(2,2-dibromo-1-trifluoromethylvinyl)benzaldehyde 
• 195985-19-4 methyl 4-(2,2-dibromo-1-trifluoromethylvinyl)benzoate 

Relevant articles and documents

Re-investigation of the coupling reaction of 2-aryl-1,1-dibromo-3,3,3- trifluoropropenes. Preparation of perfluoroalkylated [3]cumulenes

The coupling reaction of perfluoroalkylated 2-aryl-1,1-dibromoalkenes using zinc and copper(1) bromide gave stereoisomeric mixtures of [3]cumulenes and [4]radialenes. The ratio of [3]cumulenes and [4]radialenes mainly depended upon the reaction temperature and the electronic character of the aryl group. When the coupling reaction was carried out at -40 °C, (E)- and (Z)-[3]cumulenes were obtained in good selectivity and only trace amounts of [4]radialenes were detected by a 19FNMR analysis. On the other hand, a similar reaction at -60 °C afforded a considerable amount of [4]radialene isomers. When the cis-[3]cumulenes were heated at an appropriate temperature, selective isomerization to trans-[3]cumulenes occurred.