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Despite their synthetic importance, asymmetric approaches for their preparation remain scarce and are largely confined to substrate\u2010controlled or stoichiometric chiral auxiliary methods. Herein, we report a nickel hydride\u2010catalyzed enantioconvergent\n                    <jats:italic>\u03b1<\/jats:italic>\n                    \u2010alkenylation of carbonyl compounds with alkynes, providing a direct and general route to\n                    <jats:italic>\u03b1<\/jats:italic>\n                    \u2010chiral\n                    <jats:italic>\u03b2<\/jats:italic>\n                    \u2010methylene carbonyl derivatives. The transformation proceeds via Markovnikov\u2010selective alkyne hydronickellation followed by nickel\u2010radical recombination to forge the\n                    <jats:italic>\u03b1<\/jats:italic>\n                    \u2010stereogenic center, delivering the desired products with high levels of regio\u2010 and enantioselectivity. The protocol accommodates a wide range of alkynes and\n                    <jats:italic>\u03b1<\/jats:italic>\n                    \u2010halocarbonyl partners, displays excellent functional group tolerance, and can be applied to the modification of biologically relevant molecules. Mechanistic investigations indicate that a partially protic Ni(II)H species governs the observed regioselectivity, while enantio\u2010discrimination occurs during the radical capture step. This work establishes NiH catalysis as a versatile platform for expanding the synthetic repertoire for enantioenriched\n                    <jats:italic>\u03b2<\/jats:italic>\n                    \u2010methylene carbonyl architectures.\n                  <\/jats:p>","DOI":"10.1002\/anie.8854855","type":"journal-article","created":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T06:45:24Z","timestamp":1773643524000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["NiH\u2010Catalyzed Enantioconvergent\n                    <i>\u03b1<\/i>\n                    \u2010Alkenylation of Carbonyl Compounds via Markovnikov Alkyne Hydronickellation"],"prefix":"10.1002","volume":"65","author":[{"given":"Hyeontaek","family":"Nam","sequence":"first","affiliation":[{"name":"Department of Physics and Chemistry, DGIST Daegu Republic of 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