Catalytic activity of cyclophosphazenic polypodands in phase-transfer reactions. Comparison with open-chain analogues.

D Landini, A Maia, C Luciana, A Maccioni, G Podda

Index: Landini, Dario; Maia, Angelamaria; Corda, Luciana; Maccioni, Antonio; Podda, Gianni Tetrahedron, 1991 , vol. 47, # 35 p. 7477 - 7488

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Citation Number: 8

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 ...