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- W2090894243 abstract "The catalytic activity of cyclophosphazenic polypodands 1a-c was evaluated in typical reactions performed under solid-liquid (SL) and liquid-liquid (LL) phase-transfer catalysis (PTC) conditions. Such activity is largely determined by the complexation extent of 1a-c which is in turn related to the number of binding sites of the ligand (1a<1b⩽1c) and to the nature of the inorganic salt M+Y− (Na+>K+2>Rb+ and SCN−∼I−> Br−). Also the presence of water was found to play an important role. Comparison with open-chainanalogues PEG 2 and TRIDENT 3 showed that polypodands 1a-c due to their excellent stability simplicity of preparation and high complexing ability can be considered promising phase transfer catalysts especially under SL-PTC conditions. Cyclophosphazenic polypodands are efficient catalysts in anion promoted reactions (e.g. nucleophilic substitution, alkylation, reduction, oxidation reactions) under SL and LL-PTC conditions. Catalytic activity is mainly related to their complexation capability." @default.
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- W2090894243 date "1991-08-01" @default.
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- W2090894243 title "Catalytic activity of cyclophosphazenic polypodands in phase-transfer reactions. Comparison with open-chain analogues." @default.
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- W2090894243 doi "https://doi.org/10.1016/s0040-4020(01)89750-7" @default.
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