Three-Component Carbosulfonylation of Alkenes via Single-Atom Nickel Photocatalysis

A heterogeneous metallaphotocatalytic carbosulfonylation of vinyl amides has been developed using a recyclable bifunctional poly(heptazine imide) (PHI) photocatalyst bearing single-atom Ni sites (bpyNi_SA-PHI). This robust protocol enables efficient and sustainable access to diverse vicinal aminosulfones at exceptionally low catalyst loadings (0.43-0.86 mol %) under mild conditions.