Doppelcycloaddition zu einem tricyclischen Diphosphoran

Schmidpeter, Alfred; Zeiss, W.; Schomburg, Dietmar; Sheldrick, William S.

doi:10.1002/ange.19800921028

Cited by 10 publications

(4 citation statements)

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“…We also obtained adducts with CO 2 and CS 2 [67], isocyanates [68], isothiocyanates [69], ketenes [70], iminophosphines and iminophosphoranes [71], epoxides [72], nitrones, nitrile oxides, and nitrile imines [73,74]. A one-pot combination of the two mentioned types of cycloaddition was found in the reaction of the methyleneaminophosphite (MeO) 2 P-N‫ס‬CPh 2 with p-nitrobenzaldehyde [75]; four acyclic molecules combine to form the tricyclic structure 23.…”

Section: Alfred Schmidpetermentioning

confidence: 93%

Molecules that we made: An essay on phosphorus chemistry

Schmidpeter¹

1999

Heteroatom Chem.

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Section: Alfred Schmidpetermentioning

confidence: 93%

Molecules that we made: An essay on phosphorus chemistry

Schmidpeter¹

1999

Heteroatom Chem.

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“…The W-CH2P bond length of 2.305 (7) Á is indicative of a tungsten-carbon single bond. The associated W-C-P angle of 126.4 (4)°i s similar to the large M-C-C angles (120-130°) found in metal alkyl complexes.23b In the W(=CCMe3)-(=CHCMe3)(CH2CMe3)(dmpe) molecule24•25 the WVI-CH2CMe3 bond length is 2.258 (8) Á and the associated W-C-C angle is 124.5 (7)°.…”

Section: Description Of the Structurementioning

confidence: 99%

“…(See especially Phosphorus-carbon linkages within three PMe3 ligands are normal, ranging from 1.806 (10) to 1.868 (8) Á and averaging 1.824 [19] Á. Contrasting significantly with this are the phosphorus-carbon distances within the phosphonium ylide moiety, ranging from 1.748 (7) to 1.782 (9) Á and averaging 1.772 [16] Á. Furthermore, the P(4)-C(4) linkage is the shortest of these, accounting for the diminished inductive trans effect of the alkyl ligand.…”

Section: Description Of the Structurementioning

confidence: 99%

Crystal and molecular structure of [W(CH2PMe3)(CO)2Cl(PMe3)3][CF3SO3], a seven-coordinate tungsten(II) complex produced by transfer of a trimethylphosphine to the W:CH2 system

Wasserman¹

1982

Inorg. Chem.

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Inorg. Chem. 1982,assistance with the recording and interpretation of the XPS spectra. The investigations were supported in part by the Netherlands Foundation for Chemical Research (SON) with financial aid from the Netherlands Organisation of Pure Research (ZWO). 11, [Ni(1,21, 3913-3916 3913 MeC6H4)2N4)2], 73432-46-9; [Ni(Cp)J, 1271-28-9; 4-MeC6H,N3, Supplementary Material Available: Listings of structure factor amplitudes, anisotropic thermal parameters (Table IIA), and leastsquares planes (Table V) and an ORTEP drawing (Figure 5) (25 pages). Ordering information is given on any current masthead page. The title complex, prepared by Schrock and co-workers from the reaction of [W(=CH2)(PMe3)4Cl+] [CF3S0<] with CO, crystallizes in the centrosymmetric triclinic space group Pi with u = 9.249 (2) A, b = 11.91 1 (3) A, c = 13.573 (3) A, a = 81.49 (2)O, fi = 78.63 (2)O, y = 84.96 (2)O, Y = 1447.2 (6) A3, p(ca1cd) = 1.77 g for 2 = 2, and mol wt 770.8. Diffraction data were collected with a Syntex P2, automated four-circle diffractometer, and the structure was refined to RF = 4.3% and li;, = 4.8% for all 4048 independent reflections with 3.5O < 20 < 46.0° (Mo Ka radiation). The coordination environment of the tungsten atom approximates to a monocapped trigonal-prismatic geometry. One triangular face is occupied by atom C(3) of an ordered C O ligand and by atoms P(1) and P(2) of PMea 1.igands [W-C(3) = 1.957 (8) A, W-P(1) = 2.548 (2) A, and W-P(2) = 2.567 (2) A], while the other triangular face contains P(3) of the third PMe, li and [W-P(3) Registry No. I,

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“…Carbonsaureimid-chloriden an. Aufgrund der dort gesammelten Erfahrung durfte man erwarten, dafi auch die Acylierung mit einem Thiophosphorylchlorid 6 das Tetrazol labilisiert, so dal3 es leicht zur Eliminierung von Stickstoff Im Einklang mit dem skizzierten Reaktionsweg hangen sowohl die riotige Reaktionstemperatur, wie auch die fur11 erzielte Ausbeute von den Substituenten am Phosphor ab. Der geschwindigkeitsbestimmende Schritt auf diesem Weg durfte (wie bei anderen Tetrazol-Acylierungen auch14) die Stickstoffabspaltung aus dem 2-Thiophosphoryl-tetrazol 8 sein.…”

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