1,2-DICHLORO-1,2-DIFLUOROETHYLENE synthesis
- Product Name:1,2-DICHLORO-1,2-DIFLUOROETHYLENE
- CAS Number:598-88-9
- Molecular formula:C2Cl2F2
- Molecular Weight:132.92
76-12-0
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Yield: 92%
Reaction Conditions:
zinc in isopropyl alcohol at 75 - 80; for 1 h;Product distribution / selectivity;
Steps:
6
60.0 g of zinc in powder, activated by washing with a HCl solution 3N, 500 ml of isopropanol, are introduced in inert nitrogen atmosphere in a 1 litre three-necked reactor, equipped with magnetic stirrer, dropping funnel, thermometer, connected by a vigreaux column and a water condenser to a cold trap maintained at the temperature of -75°C. The inner temperature is brought to 75°C. Then 114 g of FCCl2CCl2F obtained as described in the Example 5 and then purified by fractional distilllation up to a purity of 99%, are dropwise added. When the addition is over, the mixture is left under stirring for one hour at 80°C. 67.9 g of CFC 1112 are collected in the cold trap. The yield in CFC 1112 is equal to 92%.
References:
Solvay Solexis S.p.A. EP1801090, 2007, A2 Location in patent:Page/Page column 10
354-15-4
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598-88-9
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75-43-4
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![Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-](/CAS/20210305/GIF/1000210-73-0.gif)
1000210-73-0
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79-35-6
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$30.00/25 g
598-88-9
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7783-61-1
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$195.00/50 g
75-69-4
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$35.00/25 g
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359-29-5
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$45.00/1 g
7782-50-5
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$373.00/454g