17157-69-6 Usage
Description
(Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene, also known as C4F7H, is a fluorinated organic compound characterized by its colorless gaseous state and a pungent odor. It is highly flammable and is recognized for its environmentally friendly properties, with a lower global warming potential and reduced ozone depletion potential compared to traditional fluorinated compounds.
Uses
Used in Fluoropolymer Production:
(Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene is utilized as a key building block in the synthesis of fluorinated polymers. These polymers are valued for their exceptional chemical resistance, thermal stability, and non-stick properties, making them suitable for various applications such as coatings, films, and seals.
Used as a Refrigerant:
(Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene serves as a refrigerant in various cooling systems due to its thermodynamic properties. As an environmentally friendly alternative, (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene offers a lower global warming potential, making it a preferred choice for reducing the environmental impact of refrigeration and air-conditioning systems.
Used in Synthesis of Other Fluorinated Compounds:
(Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene is also employed as an intermediate in the production of other fluorinated compounds. Its unique properties allow it to be a versatile component in the creation of specialty chemicals, pharmaceuticals, and materials for various industries.
It is crucial to handle (Z)-1,1,1,2,4,4,4-heptafluoro-but-2-ene with care, as it can present health and safety risks if not managed properly. Proper safety measures and guidelines should be followed to ensure the safe use of this compound in its various applications.
Check Digit Verification of cas no
The CAS Registry Mumber 17157-69-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,1,5 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 17157-69:
(7*1)+(6*7)+(5*1)+(4*5)+(3*7)+(2*6)+(1*9)=116
116 % 10 = 6
So 17157-69-6 is a valid CAS Registry Number.
17157-69-6Relevant articles and documents
Direct syntheses of pentakis(trifluoromethyl)cyclopentadienide salts and related systems
Chambers, Richard D.,Roche, Alex J.,Vaughan, Julian F. S.
, p. 1925 - 1929 (1996)
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
Morken, Peter A.,Campbell, Robert F.,Burton, Donald J.
, p. 81 - 86 (2007/10/02)
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.
