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Trifluoromethanesulfonic acid synthesis
- Product Name:Trifluoromethanesulfonic acid
- CAS Number:1493-13-6
- Molecular formula:CHF3O3S
- Molecular Weight:150.08
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75-63-8
1 suppliers
inquiry
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1493-13-6
631 suppliers
$12.00/5g
Yield:1493-13-6 167.5 g
Reaction Conditions:
Stage #1: Bromotrifluoromethanewith iodine;zinc in tetrahydrofuran at 40 - 50; for 5 h;Inert atmosphere;
Stage #2: with sulfur trioxide in tetrahydrofuran; for 2 h;Inert atmosphere;
Steps:
1
Under nitrogen protection, 212 g of zinc powder in 1 L of tetrahydrofuran was passed 100 g of trifluorobromomethane liquid, Then add a catalytic amount of elemental iodine, slowly heated to 40 ° C, After the response should be made, Then slowly pass 300g of trifluorobromomethane, control temperature does not exceed 50°C. After stirring for 5h, Slowly add 260g of sulfur trioxide solid, stir the reaction after the completion of feeding 2h. The reaction solution was neutralized with 30% aqueous sodium hydroxide solution,When precipitation no longer occurs, the solid is filtered off and the filtrate evaporated to dryness to give the sodium triflate as a solid. The sodium salt and 240g of concentrated sulfuric acid were mixed and stirred at 100 ° C for 5h, the distillation was trifluoromethanesulfonic acid 167.5g. (Content: 99.97%; F-: 7 ppm; Cl-: 0 ppm; SO42-: 8 ppm)
References:
CN104725283,2016,B Location in patent:Paragraph 0030; 0031
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335-05-7
44 suppliers
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1493-13-6
631 suppliers
$12.00/5g
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75-46-7
2 suppliers
$150.00/50g
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1493-13-6
631 suppliers
$12.00/5g
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2926-27-4
281 suppliers
$5.00/1g
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1493-13-6
631 suppliers
$12.00/5g
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421-83-0
242 suppliers
$22.39/1G
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1493-13-6
631 suppliers
$12.00/5g