Visible Light‐Mediated Synthesis of (Spiro)anellated Furans

Abstract

Abstract Visible light‐mediated decarboxylation using N ‐acyloxyphthalimides as the source for carbon‐centered radicals was applied for the synthesis of spirobutenolides. The utility of this approach is demonstrated with the formal synthesis of ( S )‐(+)‐lycoperdic acid. Alternatively, 2,3‐anellated furans can be obtained in a one‐pot procedure via photocyclization following a regioselective semipinacol rearrangement. magnified image