 Triflic anhydride (source code)

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= Triflic anhydride
{title2=$\mathrm{Tf_2O}$}

<Triflic anhydride> is $\mathrm{(CF_3SO_2)_2O}$, an electrophilic sulfonylating reagent. <carbonyl> <oxygen> attack can form an O-triflylated intermediate; adjacent <nitrogen> donation gives an imidoyl-<triflate> description.

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