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Phosphazene P2\u2010<jats:italic>t<\/jats:italic>Bu efficiently catalyzed the addition reaction of 4<jats:italic>H<\/jats:italic>\u2010chromen\u20104\u2010ols containing a diethoxyphosphoryl group with <jats:italic>\u03b1<\/jats:italic>,<jats:italic>\u03b2<\/jats:italic>\u2010unsaturated ketones, which involved the catalytic generation of a carbanion through the [1,2]\u2010phospha\u2010Brook rearrangement and subsequent conjugate addition at the 2\u2010position to afford adducts possessing an alkenylphosphate moiety in a highly diastereoselective manner. Further transformation of the adducts based on a nickel\u2010catalyzed cross\u2010coupling reaction with arylzinc reagents provided densely functionalized 2,2\u2010disubstituted 2<jats:italic>H<\/jats:italic>\u2010chromenes.<\/jats:p>","DOI":"10.1002\/chem.202201198","type":"journal-article","created":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T08:32:05Z","timestamp":1653640325000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Synthesis of 2,2\u2010Disubstituted 2<i>H<\/i>\u2010Chromenes through Carbon\u2010Carbon Bond Formation Utilizing a [1,2]\u2010Phospha\u2010Brook Rearrangement under Br\u00f8nsted Base Catalysis"],"prefix":"10.1002","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7227-8579","authenticated-orcid":false,"given":"Azusa","family":"Kondoh","sequence":"first","affiliation":[{"name":"Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku 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