Enantioselective photocyclization of N-alkylfuran-2-carboxyanilides to trans-dihydrofuran derivatives in inclusion crystals with optically active host compounds derived from tartaric acid

Enantioselective photocyclization of N-alkylfuran-2-carboxyanilides to trans-dihydrofuran derivatives was examined in inclusion crystals with optically active hose compounds derived from tartaric acid. X-ray structural analysis of inclusion crysals was used to study the mechanism of the enantioselective reaction of achiral compounds in inclusion crystals. The results suggested that in some cases, the steric course of the photoreaction vary depending on the types of preparation of inclusion crystals.