ChemInform Abstract: REARRANGEMENT OF DIPHOSPHINE IMINOOXIDES

Foss, V. L.; Veits, Yu. A.; Tret'yakova, T. E.; Lutsenko, I. F.

doi:10.1002/chin.197735271

Cited by 3 publications

(6 citation statements)

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“…ref. 18). The methyl carbons are equivalent at both high and low temperature suggesting that the P-N-P skeleton lies on a plane of mirror symmetry as expected for a C, conformer.…”

Section: J (Pnp)/hzmentioning

confidence: 81%

Conformations of diphosphinoamines; variable-temperature nuclear magnetic resonance and X-ray crystallographic studies

Keat¹,

Manojlović-Muir²,

Muir³

et al. 1981

J. Chem. Soc., Dalton Trans.

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Complementary information on these compounds has been obtained from lH, 13C, and l g F n.m.r., including double and triple resonance experiments. The coupling constant, ,J(PNP), covers the range -23.9 to 731.9 Hz, and its magnitude and sign can be related to the proportion of molecules in which the local symmetry of the P-N-P skeleton is C,, rather than C,. Diphosphinoamine conformers of the latter type have been clearly identified for the first time both in solution (for R = Et or Pr', X = Ph, and R = But or CH,But, X = CI) and also in the solid phase.X-Ray analysis of Ph,PN(Pr') PPh,, based on 1 269 diffractometric intensities refined to R = 0.035, shows that the symmetry of the P-N-P skeleton is close to C, in the solid, with P-N = 1.706(4) and 1.71 l ( 4 ) A, and PNP = 122.8(3)". 140.8

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“…ref. 18). The methyl carbons are equivalent at both high and low temperature suggesting that the P-N-P skeleton lies on a plane of mirror symmetry as expected for a C, conformer.…”

Section: J (Pnp)/hzmentioning

confidence: 81%

Conformations of diphosphinoamines; variable-temperature nuclear magnetic resonance and X-ray crystallographic studies

Keat¹,

Manojlović-Muir²,

Muir³

et al. 1981

J. Chem. Soc., Dalton Trans.

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“…Reported syntheses are based on desulfurization of diphosphane disulfides, oxidation reactions of diphosphanes with elemental sulfur, , or comproportionation reactions of diphosphanes and diphosphane disulfides . As an example, sodium thiophosphinites react with R 2 PCl to give compounds of type 1 S (R) . Most of the reactions are nonselective and low-yielding, and some require harsh reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The subsequent isomerization of 1 S (Ph) and 1 S (Cy) in the presence of [RuCl(Cp*)(cod)] yields ruthenium complexes of type 4 (Chart ), which feature diphosphanylsulfanes ( 2 S (R) ) as ligands. There are only few reports on the isomerization of 1 S (R) to their constitutional isomers 2 S (R) , and to the best of our knowledge, synthetic protocols for acyclic diphosphane monoselenides ( 1 Se (R) ), and monotellurides ( 1 Te (R) ) have not been reported.…”

Section: Introductionmentioning

confidence: 99%

“…. 6 Most of the reactions are nonselective and low-yielding, and some require harsh reaction conditions. Recently, two derivatives of cyclic diphosphane monochalcogenides of type 3 Ch were prepared by Chivers et al via the careful oxidation of the corresponding diphosphane with elemental sulfur and selenium, respectively (Ch = S, Se, Chart 1).…”

Section: ■ Introductionmentioning

confidence: 99%

“…7 Furthermore, Morris et al presented in 2014 a convenient approach for the preparation of 1 S (R) (R = Ph, Cy) by reacting the corresponding R 2 PCl with Li 2 S. 8 The subsequent isomerization of 1 S (Ph) and 1 S (Cy) in the presence of [RuCl(Cp*)(cod)] yields ruthenium complexes of type 4 (Chart 1), which feature diphosphanylsulfanes (2 S (R) ) as ligands. There are only few reports on the isomerization of 1 S (R) to their constitutional isomers 2 S (R) , 6 and to the best of our knowledge, synthetic protocols for acyclic diphosphane monoselenides (1 Se (R)…”

Section: ■ Introductionmentioning

confidence: 99%

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Condensation Reactions of Chlorophosphanes with Chalcogenides

et al. 2016

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A high-yielding and facile synthesis for diphosphane monochalcogenides (1(Ch)((R))) and their constitutional isomers, diphosphanylchalcoganes (2(Ch)((R))), was developed, featuring a condensation reaction between chlorophosphanes (R2PCl) and sodium chalcogenides (Na2Ch, Ch = S, Se, (Te)). The optimized protocol selectively yields either 1(Ch)((R)) (R2(Ch)PPR2) or 2(Ch)((R)) (Ch(PR2)2) depending upon the steric demand of the substituents R. Reaction pathways consistent with the distinct reaction outcomes are proposed. The application of 1(Ch)((R)) and 2(Ch)((R)) as an interesting class of ligands is exemplarily demonstrated by the preparation of selected transition metal complexes.

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Transformation between Diphosphinoamines and Iminobiphosphines: a Reversible PNP ↔ NP−P Rearrangement Triggered by Protonation/Deprotonation

et al. 2004

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ChemInform Abstract: REARRANGEMENT OF DIPHOSPHINE IMINOOXIDES

Abstract: Es sind Isomere von Typ (III) und (IV) bekannt, wobei es von der Art der Substituenten am Phosphoratom und am Stickstoff abhängt, welches Isomere sich bildet.

Cited by 3 publications

References 0 publications

Conformations of diphosphinoamines; variable-temperature nuclear magnetic resonance and X-ray crystallographic studies

Conformations of diphosphinoamines; variable-temperature nuclear magnetic resonance and X-ray crystallographic studies

Condensation Reactions of Chlorophosphanes with Chalcogenides

Transformation between Diphosphinoamines and Iminobiphosphines: a Reversible PNP ↔ NP−P Rearrangement Triggered by Protonation/Deprotonation

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