Výsledky vyhledávání - "Malcolm R. Binns"

The diastereospecific aprotic conjugate addition reactions of carbanions derived from allylic sulfoxides and allylic phosphine oxides

Autor: Richard K. Haynes, Andrew Katsifis, P. A. Schober, Simone Charlotte Vonwiller, Malcolm R. Binns

Publikováno v: Tetrahedron Letters. 26:1565-1568

The title carbanions undergo conjugate addition to cyclic enones in THF to deliver vinylic sulfoxides and vinylic phosphine oxides as single diastereomers.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd883fefe9918a846b0b7f90334ee4b3
https://doi.org/10.1016/s0040-4039(00)98553-8

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Aprotic conjugate addition of allyllithium reagents bearing polar groups to cyclic enones. 1. 3-Alkylallyl systems

Autor: A. G. Katsifis, Malcolm R. Binns, Richard K. Haynes, P. A. Schober, Simone Charlotte Vonwiller

Publikováno v: Journal of the American Chemical Society. 110:5411-5423

Etude de la regiochimie et de la stereochimie de l'addition conjuguee de sulfoxydes et d'oxydes de phosphine d'alcene-2yles, de phosphonates et de sulfoxydes d'allyles et de dimethyl-3,3 allyles, lithiees a des enones cycliques

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a54f981a06c0c28cb52ef852af177a55
https://doi.org/10.1021/ja00224a029

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A route to prostaglandin precursors from 1-(phenylthio)-2-octenyllithium

Autor: Dale E. Lambert, Malcolm R. Binns, Richard K. Haynes, P. A. Schober

Publikováno v: Tetrahedron Letters. 26:3385-3388

The enolates generated by the conjugate addition of 1-(phenylthio)-2-octenyllithium to 4-tert-butoxycyclopent-2-en-1-one and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9909cc43380272e168933708f41b6d7e
https://doi.org/10.1016/s0040-4039(00)98304-7

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HMPA-Mediated conjugate addition of alkyl- and phenylthioallyl anions to cyclopentenone

Autor: W. Roy Jackson, Timothy L. Houston, Richard K. Haynes, Malcolm R. Binns

Publikováno v: Tetrahedron Letters. 21:573-576

One equivalent of HMPA induces 1,4-addition of the title anions predominantly through the α -position to cyclopentenone in THF at −78°. In THF alone irreversible addition takes place to give mixtures comprising largely α and γ -1,2 products.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::125e5ab63bb94e2b866b988e4554150c
https://doi.org/10.1016/s0040-4039(01)85560-x

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Preparation of stable, camphor-derived, optically active allylic sulfoxides

Autor: Damon Donald Ridley, R. J. Goodridge, Richard K. Haynes, Malcolm R. Binns

Publikováno v: Tetrahedron Letters. 26:6381-6384

(+)-Camphor has been stereospecifically converted in three steps into a single isoborneol allyl sulfoxide derivative, which upon heating to 145° is quantitatively converted into its sulfoxide epimer; the anions of these compounds undergo stereospeci

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e5fcca49063bcd6c3c7c9d69bea1b3a
https://doi.org/10.1016/s0040-4039(01)84604-9

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The diastereospecific aprotic conjugate addition reactions of allylic anions-mechanistic aspects

Autor: P. A. Schober, Andrew Katsifis, Oi Lee Chai, Malcolm R. Binns, Simone Charlotte Vonwiller, Richard K. Haynes

Publikováno v: Tetrahedron Letters. 26:1569-1572

A ten-membered cyclic “chair-chair” - or “ trans -decalyl”-like TS is proposed to account for the diastereospecific aprotic conjugate addition reactions of allylic carbanions bearing polar, charge-stabilizing groups.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af852e63eabd98db3d42b014adc268f7
https://doi.org/10.1016/s0040-4039(00)98554-x

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