![](/CAS/GIF/75-82-1.gif)
1,2-DIBROMO-1,1-DIFLUOROETHANE synthesis
- Product Name:1,2-DIBROMO-1,1-DIFLUOROETHANE
- CAS Number:75-82-1
- Molecular formula:C2H2Br2F2
- Molecular Weight:223.84
![2-CHLORO-1,1-DIFLUOROETHYLENE](/CAS/GIF/359-10-4.gif)
359-10-4
46 suppliers
inquiry
![1,2-DIBROMO-1,1-DIFLUOROETHANE](/CAS/GIF/75-82-1.gif)
75-82-1
2 suppliers
inquiry
Yield: 97.6%
Reaction Conditions:
with bromine at -5;Temperature;
Steps:
1.2; 2-9; 1-2
Put a 250m1 three-necked flask in an oil bath, A cold trap is installed on the three-necked flask to reflux unreacted raw materials. Add 100g of 20% KOH and 2g of tetramethylammonium chloride to a three-necked flask, Increase the temperature of the oil bath to 80, and add 30g dropwise to the three-necked flask while stirring Raw material CF2Cl-CH2Cl, reaction for 6h, the conversion rate of raw material R132b is 97.6%, The product CF2=CHCl, the selectivity is 97.1%, the reaction product is collected and purified by distillation. Add 100g of liquid bromine into a three-necked flask, the reaction temperature is -5°C, Pass CF2=CHCl into liquid bromine at 100ml/min to 250ml, Until the liquid bromine reaction is complete, the reaction product is washed with deionized water, After distillation, the intermediate product CF2Br-CHClBr was obtained with a yield of 97.6%.
References:
CN112979465, 2021, A Location in patent:Paragraph 0031; 0033; 0037-0038; 0041-0042; 0045-0046; 0049
![1,1-DIFLUOROETHYLENE](/CAS/GIF/75-38-7.gif)
75-38-7
51 suppliers
$225.00/100 g
![1,2-DIBROMO-1,1-DIFLUOROETHANE](/CAS/GIF/75-82-1.gif)
75-82-1
2 suppliers
inquiry
![Iodobenzene](/CAS/GIF/591-50-4.gif)
591-50-4
472 suppliers
$10.00/1g
![1-BROMO-2,2-DIFLUOROETHYLENE](/CAS/GIF/359-08-0.gif)
359-08-0
64 suppliers
inquiry
![1,2-DIBROMO-1,1-DIFLUOROETHANE](/CAS/GIF/75-82-1.gif)
75-82-1
2 suppliers
inquiry
![Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-](/CAS/20210305/GIF/1000210-73-0.gif)
1000210-73-0
0 suppliers
inquiry
![Difluorostyrene](/CAS/GIF/405-42-5.gif)
405-42-5
8 suppliers
inquiry
![(1-Bromo-2,2-difluoroethenyl)benzene](/CAS/20180703/GIF/74492-30-1.gif)
74492-30-1
6 suppliers
inquiry
![1,1,1-Trifluoroethane](/CAS/20180808/GIF/420-46-2.gif)
420-46-2
1 suppliers
inquiry
![Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-](/CAS/20210305/GIF/1000210-73-0.gif)
1000210-73-0
0 suppliers
inquiry
![2-BROMO-1,1,1-TRIFLUOROETHANE](/CAS/GIF/421-06-7.gif)
421-06-7
1 suppliers
inquiry
![1,2-DIBROMO-1,1-DIFLUOROETHANE](/CAS/GIF/75-82-1.gif)
75-82-1
2 suppliers
inquiry
![1,1-DIBROMO-2,2,2-TRIFLUOROETHANE](/CAS/GIF/354-30-3.gif)
354-30-3
21 suppliers
inquiry
![1,1,1-TRIBROMOTRIFLUOROETHANE](/CAS/GIF/354-48-3.gif)
354-48-3
10 suppliers
inquiry