Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Robert S McDonald"'
Autor:
Belquis Mothana, Trevor A. Bourgeois, Rebecca M. Longley, Geri-Lynn Devereaux, Robert S. McDonald, Katherine Valenta Darvesh
Publikováno v:
ARKIVOC, Vol 2001, Iss 12, Pp 116-133 (2001)
Externí odkaz:
https://doaj.org/article/2827c4d3c74d41eca042153ea27bcd07
Publikováno v:
Canadian Journal of Chemistry. 84:1188-1196
The Claisen-like condensation of a series of 1-arylacetyl-6-acetyl-3,4,7,8-tetramethylglycolurils (Ar = Ph, p-OMeC6H4, and p-ClC6H4) was studied in preparative experiments and by analysis of kinetic data. The reactions proceeded in virtually quantita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fd9a42cf8a201fb013a4acfe78995a7
https://doi.org/10.1139/v06-147
https://doi.org/10.1139/v06-147
Autor:
Ryan Walsh, Sam Mothana, Nicole Richard, Earl Martin, Holly Cook, Sultan Darvesh, Robert S. McDonald, Diane Mataija, Katherine V. Darvesh, Karina M. M. Carneiro
Publikováno v:
Bioorganic & Medicinal Chemistry. 14:4586-4599
Cholinesterases, in addition to their well-known esterase action, also show an aryl acylamidase (AAA) activity whereby they catalyze the hydrolysis of amides of certain aromatic amines. The biological function of this catalysis is not known. Furtherm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ec6ac1e6cc44e8a278bee05661823b
https://doi.org/10.1016/j.bmc.2006.02.021
https://doi.org/10.1016/j.bmc.2006.02.021
Autor:
Karen Kam, Adrienne Pedrech, Robert S. Mcdonald, Paul H. M. Harrison, Stephen I. Jenkins, Mohammad Rahimizadeh, Hao Chen
Publikováno v:
Canadian Journal of Chemistry. 83:1253-1260
Apparent rate constants for the tert-butoxide promoted Claisen-like condensation of a series of N1-acetyl-N6-aroyl-2,5-dithio-3,4,7,8-tetramethylglycolurils (9a9f) to give N1-(3′-aroyl-3′-oxopropionyl)-2,5-dithio-3,4,7,8-tetramethylglycolurils
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bc0d19a478cbab5c2cef54c98cd910e
https://doi.org/10.1139/v05-119
https://doi.org/10.1139/v05-119
Publikováno v:
Canadian Journal of Chemistry. 80:517-527
Eight N-acetyl-N-aroyl-glycolurils were prepared and found to undergo efficient tert-butoxide-promoted Claisen-like condensation between the two acyl moieties. The kinetics for formation of each of the N-(aroylacetyl)gly coluril products were monitor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::617266f2d335e27c1c2f794558f23ba1
https://doi.org/10.1139/v02-071
https://doi.org/10.1139/v02-071
Autor:
Katherine V. Darvesh, Trevor A. Bourgeois, Belquis Mothana, Robert S. McDonald, Rebecca M. Longley, Geri-Lynn Devereaux
Publikováno v:
ARKIVOC, Vol 2001, Iss 12, Pp 116-133 (2001)
An interesting aspect of the ring-opening of thiamine and certain other thiazolium ions is the biphasic kinetics of the ring reclosure process. It has previously been proposed that the two amide rotamers of the ring-opened amidoenethiolates are respo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc4548807645398c6e6bd650b9205007
https://www.arkat-usa.org/arkivoc-journal/browse-arkivoc/ark.5550190.0002.c13
https://www.arkat-usa.org/arkivoc-journal/browse-arkivoc/ark.5550190.0002.c13
Autor:
Valerie D. Geldart, Robert S. McDonald, Elizabeth C. Carmichael, Lawrence D. Colebrook, Georgia D. Spiropoulos, Sheila Rose, David B. Moore, Oswald S. Tee
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :2609-2620
Kinetic studies of the ring-opening and reclosure reactions of thiamine and three other thiazolium ions (Q+) in aqueous solution, in the pH range 0–13, have been carried out by stopped-flow and conventional UV–VIS spectrophotometry. At high pH, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::743b30004b85c93e5506ed9f70b288a9
https://doi.org/10.1039/a705143c
https://doi.org/10.1039/a705143c
Publikováno v:
Environmental Entomology. 24:1005-1012
A pheromone-based, mass-trapping system in a commercial plantation of 20-yr-old oil palm, Elaeis guineensis Jacq., in Costa Rica, was used to assess changes in abundance and distribution of Rhynchophorus palmarum (L.) and the incidence of red ring di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3679ba822d2a6fb31c35e267902cbf30
https://doi.org/10.1093/ee/24.5.1005
https://doi.org/10.1093/ee/24.5.1005
Publikováno v:
Canadian Journal of Chemistry. 72:1910-1914
A study of the rates of the cyclizations 1 → 3 and 2 → 4 as a function of medium acidity and temperature in aqueous sulfuric acid has been performed. The latter reaction is five times faster at all acidities. An excess acidity kinetic analysis re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36600161b2116721d9e8738244aa1604
https://doi.org/10.1139/v94-242
https://doi.org/10.1139/v94-242
Publikováno v:
Quantum Biochemistry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74264010b907fc1c7aa7c00d281a25df
https://doi.org/10.1002/9783527629213.ch28
https://doi.org/10.1002/9783527629213.ch28
