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A 'Cu'te couple: A synthetically useful protocol for the preparation of N‐alkynylated sulfoximines (yne sulfoximines) has been developed. The method involves a mild copper‐catalyzed oxidative cross‐coupling of NH‐sulfoximines and terminal alkynes (see scheme). The corresponding N‐acyl sulfoximines were also obtained selectively after acid‐catalyzed hydrolysis of the yne sulfoximines.
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