Výsledky vyhledávání - "Vicky A. Burgess"

Application of the chiral auxiliary [(eta(5)-C5H5)Fe(CO)(PPh(3))] to the stereoselective formation of 4-substituted-1,4-dihydronicotinoyl complexes

Autor: Vicky A. Burgess, Stephen G. Davies, Mark Whittaker, K. H. Sutton, Paul Beckett, Guy Y. Krippner

In solution reglo- and stereoselective additions of nucleophiles to (RS)-[(η5-C5H5)Fe(CO)(PPh3)CO-3- pyridyl] (1) occur at C-4 to give the corresponding nitrogen-stabilised anions. Subsequent quenching of these anions by a proton, a chloroformate or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c7861c1520a9e6b6407fb347736a6ac
https://ora.ox.ac.uk/objects/uuid:fa8f4af7-2020-41e7-ab90-cbf15a4228ce

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STEREOSELECTIVE FORMATION OF 4-SUBSTITUTED-1,4-DIHYDRONICOTINOYL COMPLEXES UTILIZING THE CHIRAL AUXILIARY [(ETA-5-C5H5)FE(CO)(PPH3)]

Autor: Stephen G. Davies, Paul Beckett, Mark Whittaker, Vicky A. Burgess

Completely regio- and stereoselective additions of nucleophiles to ( RS )-[(η 5 -C 5 H 5 )Fe(CO)(PPh 3 )nicotinoyl] 1 occur at C-4 to give the corresponding nitrogen-stabilized anions which may be quenched by a proton, a chloroformate or dimethylsul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f099c884fcbf2dacd87e71358156978
https://doi.org/10.1016/s0040-4039(00)73651-3

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Chiral organometallic NADH mimics: Highly stereoselective reductions of ethyl benzoylformate with a 1,4-dihydronicotinoyl fragment attached to the homochiral auxiliary [(η5-C5H5)Fe(CO)(PPh3)] and possessing a homochiral β-hydroxy-carboxamide at C-5

Autor: Stephen G. Davies, Renato Skerlj, Vicky A. Burgess, Mark Whittaker

Publikováno v: Tetrahedron: Asymmetry. 3:871-901

A series of homochiral organometallic NADH mimics incorporating the chiral auxiliary [(η 5 -C 5 H 5 )Fe(CO)(PPh 3 )] at the C-3 carbonyl and a chiral carboxamide at C-5 of a 1,4-dihydronicotinoyl fragment have been prepared. These complexes were sho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6b1328a51da4506930812aa61cd9c36
https://doi.org/10.1016/s0957-4166(00)82187-4

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An EPR Study of Polar Effects in Radical Reactions ofN-Acylamino Acid Derivatives

Autor: Christopher J. Easton, Vicky A. Burgess

Publikováno v: Spectroscopy Letters. 24:1059-1070

Radicals formed by regioselective hydrogen atom transfer from the β- and γ-positions of N-acetylvaline (14) and the N-methyl substituent in N-acetylsarcosine (15) have been identified by EPR spectroscopy. The detection of these species provides dir

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94e57b0debb12e839b8146d12aac3531
https://doi.org/10.1080/00387019108018172

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Chiral organometallic NADH mimics: stereoselective reduction of ethyl benzoylformate utilising the homochiral auxiliary [(η5-C5H5)Fe(CO)(PPh3)] at C-3 and a chiral β-hydroxy-carboxamide derived from valinol at C-5

Autor: Stephen G. Davies, Renato Skerlj, Vicky A. Burgess

Publikováno v: J. Chem. Soc., Chem. Commun.. :1759-1762

Homochiral complexes incorporating the chiral auxiliary [(η5-C5H5)Fe(CO)(PPh3)] at C-3 and a chiral β-hydroxy-carboxamide, derived from valinol, at C-5 reduce ethyl benzoylformate to ethyl mandelate in greater than 97% enantiomeric excess.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac517985b714a0aa6c8e4a1e302f9bdf
https://doi.org/10.1039/c39900001759

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Selective γ-hydrogen atom abstraction in reactions of N-acetylamino acids and N-alkylacetamides with titanous ion and hydrogen peroxide

Autor: Christopher J. Easton, Vicky A. Burgess

Publikováno v: Tetrahedron Letters. 28:2747-2750

Whereas reactions of N-acetylglycine, N-acetylalanine, and pyroglutamic acid, with TiCl3/H2O2 in a flow system give e.p.r. spectra arising from the corresponding α-centred radicals ( 1 – 3 ), reactions of N-acetylvaline, 2-acetamido-butyric acid,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e6750cce16d478419b9214c1bbc5078
https://doi.org/10.1016/s0040-4039(00)96198-7

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