Heterocyclic compounds, especially
oxygen-containing heterocyclic
compounds, are crucial moieties in bioactive compounds and drug leads.
Substituted chroman-4-ones are a kind of the most significant structural
skeletons. Herein, we report a visible-light-induced dual acylation
of alkenes for constructing 3-substituted chroman-4-ones, which undergoes
a radical tandem cyclization reaction through carbon–carbon
bond cleavage of oxime esters by a nitrogen-centered radical strategy.
A series of 3-substituted chroman-4-ones were prepared with up to
86% yield.
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