Synthesis of a New Type of Water-Soluble Phosphines by addition of hydrophilic thiols to vinylphosphines. Preparation of the rhodium and palladium complexes

Autor:	Guenther Oehme, Eckhard Paetzold, Manfred Michalik
Rok vydání:	1997
Předmět:	chemistry.chemical_compound Aqueous solution chemistry Thioether Sodium Electrophile Polymer chemistry Infrared spectroscopy chemistry.chemical_element General Medicine Phosphonium Rhodium Palladium
Zdroj:	Journal für Praktische Chemie/Chemiker-Zeitung. 339:38-43
ISSN:	1521-3897 0941-1216
Popis:	Commercially available ω-thioalkane sodium sulfonates could easily be added to mono-, bi- and trivinylphosphines. The two-phase system became homogeneous by stirring. The products (1–6, 11) were characterized as phosphinoethyl-sulfonatoalkyl-thioethers with an unexpected high water solubility and with defined P/S ratios from 1/2, 1/4 and 1/6. All thioetherphosphines were characterized by 1H, 13C and 31P NMR spectroscopy, IR spectroscopy and elemental analysis. Addition occurs only at pH > 7 and in the absence of strong electrophiles to avoid the formation of phosphonium compounds. L-Cysteine ethyl ester (8) and 2-aminoethanethiol (9) react exclusively at the thiol group. The first complexes with Pd(II), Rh(III) and Rh(I) show a participation of the thioether group in the coordination.
Databáze:	OpenAIRE
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