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Additional recommended knowledge
Triflic anhydride is the chemical compound with the formula (CF3SO2)2O. This compound is a particularly strong electrophile, useful for introducing the CF3SO2 group. Triflic anhydride is the acid anhydride of the strong acid triflic acid, CF3SO2OH.
It can be assayed by 19F NMR spectroscopy: −72.6 ppm vs. -77.3 for TfOH (std CFCl3).
The compound is prepared by dehydration of triflic acid using phosphorus pentoxide:
In a representative application, is used to convert an imine into a NTf group.
It will convert phenols into a triflic ester, which enables cleavage of the C-O bond.
Categories: Acid anhydrides | Reagents for organic chemistry
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Triflic_anhydride". A list of authors is available in Wikipedia.|