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|Section2= |Section3= }} Trifluoroacetic anhydride (TFAA) is the acid anhydride of trifluoroacetic acid. In particular, trifluoroacetic anhydride is the perfluorinated derivative of acetic anhydride. Like many acid anhydrides, it may be used to introduce the corresponding trifluoroacetyl group. The corresponding trifluoroacetyl chloride, is a gas, making it inconvenient to work with. Trifluoroacetic anhydride is the recommended desiccant for trifluoroacetic acid. ==Preparation== Trifluoroacetic anhydride may be prepared from trifluoroacetic acid by dehydrating with excess α-halogenated acid chlorides. For example, with dichloroacetyl chloride: : 2 CF3COOH + Cl2CHCOCl → (CF3CO)2O + Cl2CHCOOH + HCl 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「trifluoroacetic anhydride」の詳細全文を読む スポンサード リンク
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