17157-69-6

Basic information

• Product Name: (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene
• Synonyms: (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene
• CAS NO: 17157-69-6
• Molecular Weight: 182.041
• Mol File: 17157-69-6.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene(CAS DataBase Reference)
• NIST Chemistry Reference: (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene(17157-69-6)
• EPA Substance Registry System: (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene(17157-69-6)

Safety Data

• Hazardous Substances Data: 17157-69-6(Hazardous Substances Data)

Usage

General Description

()-1,1,1,2,4,4,4-heptafluoro-but-2-ene is a fluorinated organic compound with the chemical formula C4F7H. It is a colorless gas with a pungent odor and is highly flammable. (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene is used in the production of fluorinated polymers and as a refrigerant. It is also used as a building block in the synthesis of other fluorinated compounds. ()-1,1,1,2,4,4,4-heptafluoro-but-2-ene is considered to be an environmentally friendly alternative to traditional fluorinated compounds, as it has a lower global warming potential and reduced ozone depletion potential. However, it is important to handle this compound with caution, as it can pose health and safety risks if not properly managed.

Upstream product

• 24703-63-7 trans-perfluoro-1-methylpropenylsilver 
• 87-68-3 Hexachlorobutadiene 
• 403855-51-6 (Z)-1,1,1,2,4,4,4-Heptafluoro-3-iodo-but-2-ene 

Downstream Products

• 2341-35-7 1,2-dimethyl-4,5-bis(trifluoromethyl)benzene 
• 87-68-3 Hexachlorobutadiene 
• 3414-09-3 1,1,1,4,4,4-hexafluoro-2-chloro-2-butene 
• 433-95-4 1,2-bis(trifluoromethyl)benzene 
• 692-50-2 hexafluoro-2-butyne 
• 400-49-7 trifluoromethyl 2,2,2-trifluororethyl ketone 
• 17604-03-4 2-Amino-1,1,1,4,4,4-hexafluorobut-2-ene 
• 421-50-1 1,1,1-trifluoro-2-propanone 

Relevant articles and documents

Direct syntheses of pentakis(trifluoromethyl)cyclopentadienide salts and related systems

The well-established synthesis of heptafluorobut-2-ene 2 from hexachlorobutadiene 1 and potassium fluoride has been further investigated, and novel dienes 3 and a triene 4 have been observed. Remarkably, the potassium salt of pentakis(trifluoromethyl)cyclopentadienide 7 has been isolated from this system. Salt 7 has also been obtained directly from 2. Cyclopentadiene 6 has been isolated from salt 7 by distillation from sulphuric acid. Bi- and tri-cyclic analogues of 7 have also been obtained, i.e., 9 and 10, by reaction of 2 with perfluorocyclopentene.

Preparation of the E- and Z-heptafluorobutenyl-2-zinc reagent by zinc-induced dehalogenation/metallation of 2,2-dibromo-octafluorobutane

The AlCl3-catalyzed isomerization of CF3CFBrCFBrCF3 afforded CF3CF2CBr2CF3, which upon treatment with 2 equiv. zinc in DMF underwent dehalogenation/metallation to afford a 1:1 mixture of E- and Z-CF3CF=C(ZnX)CF3 in 96percent 19F NMR yield.The zinc reagent exhibited poor thermal stability in DMF and completely decomposed by a β-elimination route in 24 h at 60 deg C.However, the zinc reagent prepared from E- and Z-CF3CF=CICF3 in triglyme showed enhanced thermal stability and gave E- and Z-p-NO2C6H4C(CF3)=CFCF3 in a palladium-catalyzed coupling reaction with p-NO2C6H4I.