- Synthesis of tervalent phosphorus esters in biphasic system using potassium phosphate as unique solid base
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The synthesis of tervalent phosphorus esters continues to be a significant area of interest, much of it again directed toward the synthesis of phosphite ligands for metal-catalyzed reactions. Typically, they were obtained through esterification of the corresponding phosphorus chlorides with the appropriate alcohols in the presence of an amine. In this paper, we present a new method for the synthesis of tervalent phosphorus esters, not yet mentioned in the literature, when potassium phosphate, as a unique base, is used in liquid-solid system. Symmetrical and unsymmetrical phosphites were obtained with good yields (65%-80%) using this method. The compounds were characterized by 31P NMR spectroscopy.
- Ilia, Gheorghe,Iliescu, Smaranda,Macarie, Lavinia,Popa, Adriana
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p. 360 - 364
(2008/09/20)
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- Phosphino Sulphonates, a Type of PIII-anhydride and Their Isomerisation into Phosphinoyl Sulphinates: a Novel Rearrangement in Phosphorus-Sulphur Chemistry
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The imidazolides (1) react smoothly with RSO3H to afford a novel class of trico-ordinate phosphorus anhydride, the phosphino sulphonates (2); under suitable structural circumstances the compounds (2) undergo a novel type of rearrangement, (2) -> (6), which provides the first example of a phosphinoyl sulphinate structure (6).
- Dabkowski, Wojciech,Michalski, Jan,Skrzypczynski, Zbigniew
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p. 1260 - 1261
(2007/10/02)
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