ChemInform Abstract: Alkaloids from Hypecoum leptocarpum.

Abstract

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Controllable Chemoselectivity in Visible‐Light Photoredox Catalysis: Four Diverse Aerobic Radical Cascade Reactions

“…[7] Nevertheless,the photoredox reaction of THIQs with electrophiles in the presence of oxygen through aradical pathway would be fascinating because of the convenience of the process and the access to unusual products,b ut it had not yet been reported. Four series of products,c ontaining the main cores of many compounds which have important biological properties (e.g., I-IV, [9] V [10] and VI), [11] were obtained with satisfactory results (Scheme 1c). [7b] Previously,w ed eveloped ad icyanopyrazine-derived chromophore (DPZ) as an ovel photoredox organocatalyst in as eries of reactions (Scheme 1b).…”