Tetrahedron p. 2211 - 2220 (1991)
Update date:2022-08-04
Topics: Regioselectivity Chromatography Mass spectrometry (MS) HPLC (high-performance liquid chromatography) NMR (nuclear magnetic resonance) Benzophenone Stereoselectivity Photosensitizer Quenching Quantum Yield UV Irradiation Triplet State Quencher Singlet oxygen Radical intermediate Photoaddition Photostationary state Exciplex
Ishar
Gandhi
Photochemical addition of benzophenone to ethylpenta-2, 3-dienoate (1a), ethyl hexa-2,3-dienoate (1b) and ethyl 4-methylhexa-2,3-dienoate (1c) furnish various mono- and dioxetanes. Novel oxetanes (2a,b) result in the reactions of (1a,b) through addition of benzophenone to electron deficient C2-C3 π-bond of the respective esters. A rationalization of the obtained modes of photoaddition has been offered.
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