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Superacid-catalyzed reactions of cinnamic acids and the role of superelectrophiles.
TLDR
It is provided clear evidence that protonated carboxylic acid groups (or the corresponding acyl cation) can enhance the reactivity of an adjacent electrophilic center.
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Reactive dications: the superacid-catalyzed reactions of alkynes bearing adjacent N-heterocycles or amine groups.
A variety of aminoalkynes and related heterocycles are reacted in the Bronsted superacid CF(3)SO(3)H (triflic acid), and products are obtained in generally good yields (69-99%) from…
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Dicationic intermediates involving protonated amides: dual modes of reactivity including the acylation of arenes.
TLDR
In the Brønsted superacid CF( 3)SO(3)H (triflic acid), amides are able to form reactive, dicationic electrophiles that participate in two distinctly different types of electrophilic reactions.
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Dicationic electrophiles from olefinic amines in superacid.
TLDR
A general mechanism is proposed that invokes the formation of reactive, dicationic electrophiles and the direct observation of a diprotonated species is reported from low-temperature NMR experiments.
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Superacid catalyzed ring-opening reactions involving 2-oxazolines and the role of superelectrophilic intermediates
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Superacid Catalyzed Ring-Opening Reactions Involving 2-Oxazolines and the Role of Superelectrophilic Intermediates.
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