E -Selective semi-hydrogenation of alkynes via a sulfur-radical mediation over cyclodextrin-modified nickel nanocatalyst

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An efficient cyclodextrin-modified Ni catalyst was developed for E -selective semi-hydrogenation of alkynes that takes into account for the highly active H δ − and H δ + , in situ formed Ni nanoparticles, and the host–guest interaction.