Výsledky vyhledávání - "Peter L. Pauson"

Use of a highly effective intramolecular Pauson–Khand cyclisation for the formal total synthesis of (±)-α- and β-cedrene by preparation of cedrone

Autor: Peter L. Pauson, Angus J. Morrison, Mark McLaughlin, Graeme J. Thurston, James J. Crawford, William J. Kerr

Publikováno v: Tetrahedron. 62:11360-11370

The cedrene carbon skeleton was directly and efficiently assembled from a simple monocyclic precursor by the strategic use of a high yielding intramolecular Pauson–Khand cyclisation reaction. A small number of further synthetic manipulations provid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7cc5fa9086b547f9009ac210b2b079b
https://doi.org/10.1016/j.tet.2006.05.044

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Behaviour of monocomplexed 1,4-diynes in the Khand reaction and use of ethylene equivalent techniques in a convenient route to tritium-labelled methyl jasmonate

Autor: Mark McLaughlin, Peter L. Pauson, William J. Kerr

Publikováno v: Journal of Organometallic Chemistry. 630:118-124

1,2-Complexed hexacarbonyl(hepta-1,4-diyne)dicobalt, obtained from hexacarbonyl(propargyl acetate)dicobalt with tri-1-butynylaluminium, has been converted, by selective Khand annulation of the complexed triple bond with vinyl benzoate, to 2-pent-2-yn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::239cc4655a5a8e1820dfc31caaf843c8
https://doi.org/10.1016/s0022-328x(01)00890-7

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The utility of vinyl ethers and vinyl esters in the Khand reaction. The value of vinyl esters as ethylene equivalents and a modified synthesis of (+)-taylorione as an example

Autor: Mark McLaughlin, Sarah M. Robertson, William J. Kerr, Peter L. Pauson

Publikováno v: Journal of Organometallic Chemistry. 630:104-117

The behaviour of various oxygenated alkenes in the Khand cyclisation reaction has been studied. Although several vinyl ethers reacted to give the expected oxygenated cyclopentenone products, usually with good levels of regioselectivity, the use of vi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5c5d295a42feeb1028bd22fc91d1fcc
https://doi.org/10.1016/s0022-328x(01)00891-9

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The preparation and reactions of alkynylphosphonate hexacarbonyldicobalt complexes

Autor: Graham R. Knox, R. John Baxter, Peter L. Pauson, Mark McLaughlin, Mark D. Spicer

Publikováno v: Journal of Organometallic Chemistry. 579:83-89

The preparation of a series of hexacarbonyldicobalt alkynylphosphonate complexes, Co2(CO)6[R1CCP(O)(OR2)2] is reported. They are found to be unreactive under a range of conditions and this is ascribed to a combination of electron deficiency and al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::070e0735bd317a72f3f21759fcbf2ad2
https://doi.org/10.1016/s0022-328x(98)01201-7

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On the behaviour of dimethyl acetylenedicarboxylate in carbonylation and Khand reactions

Autor: R. John Baxter, Peter L. Pauson, Graham R. Knox, Mark D. Spicer

Publikováno v: Journal of Organometallic Chemistry. 579:90-96

Dimethyl acetylenedicarboxylate (DMAD) has been used as the alkyne component in the Khand reaction with norbornene under both thermal and N -oxide promoted conditions. Its thermolysis under CO pressure has also been reinvestigated and the structure o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83690ee405d65b616125333af3fecfc8
https://doi.org/10.1016/s0022-328x(98)01202-9

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Formation of Arenes and of Tetracarbonyl(hexatrienediyl)dicobalt ('Flyover') Complexes from Co2(CO)8

Autor: R. John Baxter, Mark D. Spicer, Graham R. Knox, Jennifer H. Moir, and Peter L. Pauson

Publikováno v: Organometallics. 18:206-214

The cobalt carbonyl mediated cyclotrimerization of alkynes to yield both arenes and “flyover” complexes (which contain a C6Co2 ring) has been reexamined with particular regard to the intermediacy o...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c56f7d49f4a9c4c5b28b74e4d05d0461
https://doi.org/10.1021/om980545q

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Structure of (PhC⋮CH)3Co2(CO)6: A New Co2(CO)8 Catalyzed Oligomerization Sequence of an Alkyne and Carbon Monoxide

Autor: R. John Baxter, Mark D. Spicer, and Peter L. Pauson, Graham R. Knox

Publikováno v: Organometallics. 18:215-218

Hubel's tris(ethynylbenzene)hexacarbonyldicobalt complex, (PhC⋮CH)3Co2(CO)6, a byproduct in cobaltacyclopentadiene formation, has been characterized by spectroscopic methods and a single-crystal X-...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34cdcabfdd37aaedce06abbca814cd53
https://doi.org/10.1021/om980546i

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Synthesis of Dicarbonyl(η4-tricarbonylcobaltacyclopentadiene)cobalt Complexes from Co2(CO)8. A General Route to Intermediates in Cobalt Carbonyl Mediated Alkyne Trimerization

Autor: R. John Baxter, and Peter L. Pauson, Mark D. Spicer, Graham R. Knox

Publikováno v: Organometallics. 18:197-205

We have shown that cobaltacyclopentadiene complexes, derived from cobalt carbonyl and two alkyne molecules and long believed to be intermediates in cyclotrimerization as well as in the formation of the (three-alkyne-derived) “flyover” complexes,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7b3b2a2f5ba40efc5dc2be6d4b6e211
https://doi.org/10.1021/om980544y

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