1974
DOI: 10.1002/zaac.19744080302
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Beiträge zur Chemie des Phosphors. 53. 1,2,3,4‐Tetraphenyl‐cyclo‐5‐thia‐1,2,3,4‐tetraphosphan

Abstract: 1,2,3,4‐Tetraphenyl‐cyclo‐5‐thia‐1,2,3,4‐tetraphoshan (“Tetraphenyl‐cyclotetraphosphin‐monosulfid”) 1 wird durch Umsetzung von Pentaphenyl‐cyclopentaphosphan (2) mit Schwefel (4 C6H5P:1 S) in sehr guter Ausbeute und Reinheit erhalten. Weitere neue Darstellungswege sind die Komproportionierung von 2 und (C6H5PS)3 sowie die Reaktion von Dikalium‐triphenyl‐cyclotriphosphid (4) mit Schwefeldichlorid. Das IR‐ und das 31P‐NMR‐Spektrum der Verbindung sind ein eindeutiges Indiz für die Heterocyclophosphan‐Struktur 1 m… Show more

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Cited by 17 publications
(4 citation statements)
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“…[12] The phenyl substituents on the neighbouring P1 and P2 atoms alternate above and below the central ring (trans arrangement), all three Ph substituents occupy axial positions. Only two examples of heterocycles with a PPCPSe atomic sequence in cyclic arrangement have been reported previously.…”
Section: P 3 Cse Heterocycle (Four Diastereomers 7a-d)mentioning
confidence: 99%
See 1 more Smart Citation
“…[12] The phenyl substituents on the neighbouring P1 and P2 atoms alternate above and below the central ring (trans arrangement), all three Ph substituents occupy axial positions. Only two examples of heterocycles with a PPCPSe atomic sequence in cyclic arrangement have been reported previously.…”
Section: P 3 Cse Heterocycle (Four Diastereomers 7a-d)mentioning
confidence: 99%
“…[5,6] Other methods employing Me 3 Si-(tBuP) 4 -SiMe 3 [7] or (iPrPCl) 2 CH 2 [8] have also been reported. Reports on reactions of cyclocarbaphosphanes and related systems with [ The results summarised in Scheme 2 show that, unlike the homo-cyclophosphanes (PR) x , [12] the addition of S to (RP) x (CH 2 ) y does not proceed with cleavage of any PϪP bond. On the other hand, the treatment of (PPh) 5 with vari-ous ratios of grey Se commonly leads to ring rupture and reorganization.…”
Section: Introductionmentioning
confidence: 98%
“…Interestingly, while BH 3 complexes of cyclooligophosphanes have remained elusive, Baudler et al reported reactions of the cyclooligophosphanes cyclo-(P 4 Ph 4 CH 2 ) (2) and cyclo-(P 5 Ph 5 ) (5) with elemental sulfur to give the sulfides cyclo-(S 2 P 4 Ph 4 CH 2 ) (2•2S) 7 and cyclo-(SP 4 Ph 4 ). 8 )]OTf (R, R = Me, Ph) can be prepared by reaction of cyclooligosphanes with phosphenium triflates or methyl triflate. 9 These reports are of particular relevance to the present study, as the BH 3 complexes presented here may be regarded as neutral, isoelectronic analogues of these cationic compounds.…”
Section: Introductionmentioning
confidence: 99%
“…mentdihalogeniden. Dabei entstehen jedoch -unabhängig von der Kettenlänge n des eingesetzten Phosphids -nahezu ausschließlich die beständigen Fünf-ring-Heterocyclophosphane (PR)4E (E = CH2 [8,9], S [10], Se [11]). Verbindungen anderer Ringgröße lagern sich in Gegenwart der nucleophilen Phosphide M I 2(PR)n und des polaren Lösungsmittels Tetrahydrofuran rasch in die weniger reaktiven und vergleichsweise stabileren Fünfring-Heterocyclen um [9].…”
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