2155-96-6Relevant articles and documents
Synthesis of a new type of water-soluble phosphines by addition of hydrophilic thiols to vinylphosphines. Preparation of the rhodium and palladium complexes
Paetzold, Eckhard,Michalik, Manfred,Oehme, Guenther
, p. 38 - 43 (1997)
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.
Tridentate phosphine ligands bearing aza-crown ether lariats
Pap, Levente G.,Arulsamy, Navamoney,Hulley, Elliott B.
supporting information, p. 385 - 392 (2017/11/30)
Crown ethers are useful macrocycles that act as size-selective binding sites for alkali metals. These frameworks have been incorporated into a number of macromolecular assemblies that use simple cations as reporters and/or activity triggers. Incorporating crown ethers into secondary coordination sphere ligand frameworks for transition metal chemistry will lead to new potential methods for controlling bond formation steps, and routes that couple traditional ligand frameworks with these moieties are highly desirable. Herein we report the syntheses of a family of tridentate phosphine complexes bearing tethered aza-crown ethers (lariats) designed to modularize the variation of aza-crown size, lariat length, and distal phosphine substituents, followed by the synthesis and solid-state structures of Mo(III) complexes bearing cations in the pendent crown ethers.
Synthesis method of Josiphos chiral ferrocenyl phosphine ligands
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Paragraph 0007; 0022; 0023, (2017/05/27)
The invention discloses a synthesis method of Josiphos chiral ferrocenyl phosphine ligands, and belongs to the field of organic synthesis. The method is realized through the following steps of using ferrocene as a starting raw material; using aluminum chloride as a catalyst; taking a reaction with phosphonic chloride compound R2PCl; then, taking a reaction with vinyl diaryl phosphine under the catalysis effect of ferric trichloride and D-proline to obtain the Josiphos chiral ferrocenyl phosphine ligands. Compared with the prior art, the synthesis method has the advantages that the steps are few; the operation is simple; the production cost is reduced; the synthesis method is suitable for industrial production. The prepared Josiphos chiral ferrocenyl phosphine ligands can be used as ligands of metal catalysts for catalyzing an unsymmetrical organic reaction; the synthesis method is applied to the fields of medicine synthesis and the like.
