Photocatalyzed Reduction of β-Nitroacrylates via Hydrogen Atom Transfer Promoted by Tetrabutylammonium Decatungstate

A photocatalyzed reduction of the CC double bond in β-nitroacrylates under flow conditions is developed. The reaction takes place upon irradiation at 390 nm in the presence of tetrabutylammonium decatungstate and requires γ-terpinene as a hydrogen source. Products are obtained in good yields, and various functional groups are tolerated, such as unconjugated double bonds, benzyl groups and carbonyls, thus demonstrating a substantial chemoselectivity.