METHOD OF PREPARING HALOGENATED CARBOXYLIC ANHYDRIDES
To provide a method for producing halogenated carboxylic anhydrides wherein: improved yield and/or purity of a product can be obtained; waste and/or by-products are easily separated from the product of the method; and/or the toxicity is reduced and/or environmental damage is reduced.SOLUTION: Triflu...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a method for producing halogenated carboxylic anhydrides wherein: improved yield and/or purity of a product can be obtained; waste and/or by-products are easily separated from the product of the method; and/or the toxicity is reduced and/or environmental damage is reduced.SOLUTION: Trifluoroacetate acid anhydrides are prepared by, for example, reacting trifluoroacetate with sulfuric acid, oleum and/or disulfate.SELECTED DRAWING: None
【課題】生成物の改善された収率及び／又は純度を得ることが可能で、廃棄物及び／又は副生成物が、その方法の生成物からより容易に分離され、及び／又はより毒性が少なく及び／又は環境に対してより害の少ないハロゲン化カルボン酸無水物の製造方法の提供。【解決手段】例えば、トリフルオロ酢酸を、硫酸、発煙硫酸及び／又は二硫酸と反応させることによりトリフルオロ酢酸酸無水物を調製する。【選択図】なし |
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