ChemicalBook CAS DataBase List 1-BROMO-1,1,2,2,3,3,4,4-OCTAFLUOROBUTANE

1-BROMO-1,1,2,2,3,3,4,4-OCTAFLUOROBUTANE synthesis

6synthesis methods

Product Name:1-BROMO-1,1,2,2,3,3,4,4-OCTAFLUOROBUTANE
CAS Number:558-86-1
Molecular formula:C4HBrF8
Molecular Weight:280.94

335-48-8 Synthesis

335-48-8
86 suppliers
$26.00/5g

1-BROMO-1,1,2,2,3,3,4,4-OCTAFLUOROBUTANE

558-86-1
13 suppliers
inquiry

685-63-2
99 suppliers
inquiry

Yield:-

Reaction Conditions:

with N,N-dimethyl-formamide;zinc in 5,5-dimethyl-1,3-cyclohexadiene at -78 - 140;

Steps:

12 Example 1: ClCF₂-CFCl-CF2-CF₂I; pre-added; no iodine-containing inorganic material

General procedure: 200 g (0.53 mol) of xylene and 34.93 g (0.53 mol) of zinc are added to a condensed eggplant flask with a trap cooled to -78 ° C, and 92 g (0.24 mol) of raw material (ClCF 2 CFClCF₂CF₂I) was added, and under stirring, the inner temperature was heated until it reached 140 ° C. After the internal temperature becomes constant, N,N-dimethylformamide (DMF) is added at a dripping rate of 0.53 mol/h (zinc 1 mol1 mol / h) for 1 hour, and continued to heatrefluxfor 3 hours while stirring. After the completion of the reaction, the gas phase, liquid phase, and reaction liquid of the collection cylinder were analyzed by gas chromatomography, and the conversion rate and selectivity were calculated in consideration of each, and the conversion rate was 100 mol%, and the selectivity of each component was CF 2 = CFCF = CF 2 46 mol%, CF 2 = CF-CF₂-CF₂H is 0.35 mol%, ClCF 2-CFCl-CF = CF₂is 1.7Mole %, ClCF 2-CFCl-CF 2-CF 2-CF₂H was 26 mol%, and other by-products (CF 3 CF = CHCF₃etc.) totaled 26 mol%.

References:

JP2023/21141,2023,A Location in patent:Paragraph 0045; 0056; 0061

335-48-8 Synthesis

335-48-8
86 suppliers
$26.00/5g

558-86-1
13 suppliers
inquiry