Alkenylthianthrenium Salts as Synthetic Equivalents of (Cyclo)alkynes in Azide Cycloaddition Reactions.

Cycloalkynes are highly reactive coupling partners in a variety of cycloaddition manifolds, but the synthetic utility of cycloalkynes with fewer than 8 atoms is limited by their fleeting stability. To expand access to heterocycles derived from formal…

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