Abstract
The cyanamide‐functionalised carbon nitride (NCN‐CNx) can be employed as a photo‐redox catalyst for the light‐induced sulfonylation of alkenes with sulfinate salts, attaining product yields twice those obtained with the non‐functionalised counterpart and comparable to those achieved with the benchmark homogeneous photocatalyst Eosin Y. NCN‐CNx as a heterogeneous photocatalyst is easily isolatable and can be re‐used for this reaction for over three cycles. This photocatalytic reaction can proceed with various sulfinates (aryl‐, alkyl‐ and thiophene‐based) and alkenes with electron‐donating and ‐withdrawing groups, obtaining good to excellent product yields. A reductive quenching route was determined to be the likely mechanism for this photocatalyst.
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