Durch Benzophenon photosensibilisierte Synthese der Terebinsäure

Schenck, Günther O.; Koltzenburg, G.; Großmann, Hermann

doi:10.1002/ange.19570690506

Cited by 90 publications

(44 citation statements)

References 3 publications

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“…In the presen.ce of Q we get (5) Only with fluorescein and the tetrabromo derivative could an influence of Q ( = Cyclo-octatetraene, COT) on yr be obtained. Although the concentration of Q was as high as l. molefl.…”

Section: Effectiveness Of Fluorescein and Derivatives As Sensitizers Inmentioning

confidence: 98%

Mechanism and stereoselectivity of photosensitized oxygen transfer reactions

Gollnick¹,

Schenck²

1964

Pure and Applied Chemistry

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291

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Section: Effectiveness Of Fluorescein and Derivatives As Sensitizers Inmentioning

confidence: 98%

Mechanism and stereoselectivity of photosensitized oxygen transfer reactions

Gollnick¹,

Schenck²

1964

Pure and Applied Chemistry

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291

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“…17 The authors • believe that the allylthiourea (56) is photo-oxidised to allylaminoiminomethanesulfinic acid (59), although 59 was not isolated in crystalline form from these solutions. 87 The compound 59 decomposes to give SO 2 and other material.…”

Section: Dyesmentioning

confidence: 99%

Mechanisms in sensitized photochemistry of environmental chemicals

Choudhry

Roof

Hutzinger

1979

Toxicological & Environmental Chemistry Reviews

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This review consists of three main parts. After a short discussion of the theory of photochemistry, the three major mechanisms (radiative, short range and long range) for the transfer of electronic excitation energy from sensitizers (donors) to substrates (acceptors) are described. Criteria for the selection of. sensitizers are a high efficiency of intersystem crossing (in the case of triplet sensitization) and energy transfer, and strong absorption at wavelengths longer than those at which the acceptor absorbs. Two mechanisms of sensitized photooxygenation, viz. the radical and singlet oxygen type, are discussed.The second part of this review deals with photosensitizers, with a strong emphasis on compounds of importance in environmental photochemistry on the one hand and those interesting from a mechanistic point of view on the other.The third part describes photo-inducers and their role in photoreactions. Additional literature references (to January 1978) are presented at the end of this review.

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“…6,7 As the final deprotection step limited the overall yield in a 2-5% range, 3c we aimed to develop an alternative access to ortho-(2-hydroxy-3-methylbut-3-enyl)phenol appendage. A second method, based on the Schenck ene reaction, 8 was also reported to oxidize prenyl side chain into 2-hydroxy-3-methylbut-3-enyl chain but only in the case of protected phenolic derivatives. 9,10 This methodology, based on the reactivity of singlet oxygen with olefin bearing allylic hydrogens, yielded intermediate hydroperoxides which were quantitatively reduced into the corresponding allylic alcohols.…”

Section: Introductionmentioning

confidence: 99%