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- W2065552172 abstract "The photochemistry of the α-phenyl-β,γ-enones 3–6 has been studied under conditions of direct (λ 300 nm) and triplet-sensitized irradiation.Upon direct irradiation, 3 exhibits decarbonylation, a 1,3-acyl shift (1,3-AS) and an oxa-di-π-methane (ODPM) rearrangement. Under the same conditions, 4, on the other hand, affords only the ODPM product whereas 5 gives the decarbonylation, 1,3-AS and ODPM products. The formation of the ODPM product of 5 is efficiently quenched by triplet quenchers in contrast to the ODPM products of 3 and 4, the quantum yields of which are not reduced upon the addition of typical triplet quenchers. Triplet-sensitized irradiation of 5 leads to the ODPM rearrangement, whereas surprisingly 3 and 4 are unreactive. It is suggested that the ODPM rearrangement, upon direct irradiation of 3 and 4, proceeds from the S2(ππ*) state. The ODPM product formed upon direct irradiation of 5 is thought to be formed from the T1(ππ*) state populated by ISC from the S1(nπ*) state.Upon direct irradiation, 6 exhibits a reversible 1,3-AS and in addition ketene formation via an intramolecular 1,5-H shift. Under conditions of triplet photosensitization, compound 6 appears to be stable.Given the apparently different photochemical behaviour of these constrained compounds, a general reactivity pattern for the direct and sensitized irradiation cannot be defined." @default.
- W2065552172 created "2016-06-24" @default.
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- W2065552172 date "2010-09-02" @default.
- W2065552172 modified "2023-09-26" @default.
- W2065552172 title "Photochemical reactivities of cyclic α-phenyl-β,γ-enones. Singlet 1,3-acyl shift, decarbonylation and unquenchable oxa-di-π-methane reactions upon direct irradiation" @default.
- W2065552172 cites W1500952857 @default.
- W2065552172 cites W1554095332 @default.
- W2065552172 cites W1967115939 @default.
- W2065552172 cites W1969690342 @default.
- W2065552172 cites W1989766328 @default.
- W2065552172 cites W1990263701 @default.
- W2065552172 cites W1992732812 @default.
- W2065552172 cites W1997553390 @default.
- W2065552172 cites W2001145809 @default.
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- W2065552172 cites W2003262988 @default.
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- W2065552172 cites W2030658635 @default.
- W2065552172 cites W2032643652 @default.
- W2065552172 cites W2034167576 @default.
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- W2065552172 cites W51523481 @default.
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- W2065552172 doi "https://doi.org/10.1002/recl.19881070906" @default.
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