Toshiya Hirahama, Misaki Umezawa, M. Shoji
Apr 30, 2020
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Journal
Tetrahedron Letters
Abstract
Abstract We report a methodology to achieve the direct Michael addition of 2-phenylmalononitrile onto α,β-unsaturated carbonyl compounds through a visible-light-induced photoredox reaction. A radical species, generated from the Michael nucleophile under blue-light irradiation in the presence of an acridinium catalyst, could connect to the β-carbon of the carbonyl substrate, to furnish γ, γ-dicyanocarboxylic acid derivatives in good yields.