期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 352, 期 7, 页码 1193-1203出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201000014
关键词
amphiphiles; aqueous-phase catalysis; phosphane ligands; Tsuji-Trost reaction; water
资金
- Centre National de la Recherche Scientifique (CNRS)
- Ministere de l'Education et de la Recherche [2005-2008]
- Region Nord-Pas de Calais (France)
- Ministere de la Jettnesse, de l'Education Nationale et de la Recherche (MJENR)
- Fonds Europeens de Developpement Regional (FEDER)
Mono- and disulfonated amphiphilic versions of triphenylphosphane (PPh3) and cyclohexyl-(phenyl)phosphane were easily synthesized from commercial reagents and sulfuric acid. The behaviour of these phosphanes in solution was investigated by surface tension, isothermal titration calorimetry, nuclear magnetic resonance and cryo-transmission electron microscopy. Two different supramolecular assemblies were evidenced according to the degree of sulfonation. The monosulfonated phosphanes formed well organized micelle-like aggregates while the disulfonated phosphanes formed heterogeneous and disorganized vesicle-like assemblies. The efficiency of these amphiphilic phosphanes was evaluated in the aqueous biphasic, palladium-catalyzed cleavage of allyl alkyl carbonates.
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