Rose Bengal functionalized phase-transfer catalysts promoting photooxidations with singlet oxygen; nucleophilic displacements on dioxetanic and endoperoxidic …
A Guarini, P Tundo
Index: Guarini, Alessandro; Tundo, Pietro Journal of Organic Chemistry, 1987 , vol. 52, # 16 p. 3501 - 3508
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Citation Number: 19
Abstract
Photooxidations with IOz promoted by an anionic photosensitizer, such as Rose Bengal, can be readily performed in an aqueous-organic, two-phase system in the presence of catalytic amounts of quaternary onium salts that transfer the anion in the organic phase. This means that one can use low-polar solvents, which are unusual in reactions with this sensitizer. Soluble and silica gel immobilized onium salts were used as the phase-transfer catalysts. ...
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