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Issue 6, 2000
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Reaction of three-coordinate phosphorus compounds with organophosphorus pseudohalogens. Part 4. The mechanism of interaction between bis(phosphinoyl) diselenides [R1R2P(O)Se]2 with three-coordinate phosphorus compounds

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Abstract

The reaction of bis(phosphinoyl) diselenides R1R2P(O)Se–SeP(O)R1R21 with P(III) compounds has been investigated and its mechanistic features have been elucidated by variable temperature 31P NMR spectroscopy. These studies show that in most cases phosphonium intermediates 7, 13 and 10, 16 are involved. In the case when ligands on P(III) increase the stability of the five-coordinate structure, a phosphorane intermediate is observed. In the isomerization 710 and 1316 the pathway of decomposition (deselenization, deoxygenation or dealkylation) to give stable end products is influenced by electronic and steric factors.

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Publication details

The article was received on 23 Feb 2000, accepted on 28 Mar 2000 and first published on 16 May 2000


Article type: Paper
DOI: 10.1039/B001492N
J. Chem. Soc., Perkin Trans. 2, 2000, 1135-1140

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    Reaction of three-coordinate phosphorus compounds with organophosphorus pseudohalogens. Part 4. The mechanism of interaction between bis(phosphinoyl) diselenides [R1R2P(O)Se]2 with three-coordinate phosphorus compounds

    E. Krawczyk, A. Skowrońska and J. Michalski, J. Chem. Soc., Perkin Trans. 2, 2000, 1135
    DOI: 10.1039/B001492N

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