Zobrazeno 1 - 10
of 233
pro vyhledávání: '"William H. Pirkle"'
Autor:
Robert P. Sheridan, Patrick Piras, Edward C. Sherer, Christian Roussel, William H. Pirkle, Christopher J. Welch
Publikováno v:
Molecules, Vol 21, Iss 10, p 1297 (2016)
We apply matched molecular pair (MMP) analysis to data from ChirBase, which contains literature reports of chromatographic enantioseparations. For the 19 chiral stationary phases we examined, we were able to identify 289 sets of pairs where there is
Externí odkaz:
https://doaj.org/article/98a0f6ec51684acc887bfa73f669d151
Autor:
Christopher J. Welch, Patrick Piras, Christian Roussel, William H. Pirkle, Robert P. Sheridan, Edward C. Sherer
Publikováno v:
Molecules
Molecules, MDPI, 2016, 21 (10), ⟨10.3390/molecules21101297⟩
Molecules, 2016, 21 (10), ⟨10.3390/molecules21101297⟩
Molecules; Volume 21; Issue 10; Pages: 1297
Molecules, Vol 21, Iss 10, p 1297 (2016)
Molecules, MDPI, 2016, 21 (10), ⟨10.3390/molecules21101297⟩
Molecules, 2016, 21 (10), ⟨10.3390/molecules21101297⟩
Molecules; Volume 21; Issue 10; Pages: 1297
Molecules, Vol 21, Iss 10, p 1297 (2016)
International audience; We apply matched molecular pair (MMP) analysis to data from ChirBase, which contains literature reports of chromatographic enantioseparations. For the 19 chiral stationary phases we examined, we were able to identify 289 sets
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1211fd8c51f6ba14703d86eab2864f5
https://hal.archives-ouvertes.fr/hal-01442568
https://hal.archives-ouvertes.fr/hal-01442568
Publikováno v:
Bulletin of the Korean Chemical Society. 32:4423-4426
School of Chemical Sciences, University of Illinois, Urbana, IL 61801, USAReceived September 1, 2011, Accepted October 9, 2011Key Words : Enantiomer separation, Chiral self-recognition, Chiral stationary phasePioneering work in the design of brush-ty
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::663a83a9730b3de58be343dd31d863e5
https://doi.org/10.5012/bkcs.2011.32.12.4423
https://doi.org/10.5012/bkcs.2011.32.12.4423
Autor:
Huei-Shian Lin, James R. Carey, William H. Pirkle, Wonjae Lee, Phillip I. Volkers, Bin-Syuan Huang, William A. Boulanger, David A. Engebretson, Seth E. Snyder
Publikováno v:
Tetrahedron. 67:7143-7147
Chiral stationary phases were synthesized and their ability to separate racemic precursors from which they were derived was assessed. Taken in conjunction with homochiral recognition previously observed in the solid state, the results of this study r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc34f8331c8bcbfb7af9b90b14cd8e89
https://doi.org/10.1016/j.tet.2011.06.103
https://doi.org/10.1016/j.tet.2011.06.103
Autor:
Wonjae Lee, William H. Pirkle
Publikováno v:
Bulletin of the Korean Chemical Society. 31:620-623
A brush type chiral stationary phase (CSP 2) derived from α-amino β-lactam was prepared for the separation of the enan- tiomers of β-blockers. Compared to the CSP derived from α-amino phosphonate (CSP 1), in general, the conforma- tionally rigid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::111bc8dc551f49bcd51ff3af8d2e962b
https://doi.org/10.5012/bkcs.2010.31.03.620
https://doi.org/10.5012/bkcs.2010.31.03.620
Autor:
Elias Ndzie, Wilhelm Hauck, Olivier Ludemann-Hombouger, William H. Pirkle, Jean Blehaut, Scott R. Perrin, Roger-Marc Nicoud
Publikováno v:
Organic Process Research & Development. 11:817-824
An industrial process for the purification of metric tons of enantiomerically pure difluoromethylornithine (DFMO HCl) is described. The amino acid DFMO HCl is cyclized to form the lactam, which is acylated with pivaloyl chloride to form rac-N-pivaloy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6949896cf55cd29041a1ce78a93c39a0
https://doi.org/10.1021/op700118m
https://doi.org/10.1021/op700118m
Autor:
William H. Pirkle, Michael E. Koscho
Publikováno v:
Tetrahedron: Asymmetry. 16:3345-3351
A chiral solvating agent (CSA) based on the chiral selector used in the Whelk-O 1 chiral stationary phase (CSP) was prepared and its scope evaluated. This chiral selector possesses a cleft flanked with aromatic groups and produces upfield chemical sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80b47ebff5e8a164b82d5ee4c53ff691
https://doi.org/10.1016/j.tetasy.2005.08.032
https://doi.org/10.1016/j.tetasy.2005.08.032
Publikováno v:
Tetrahedron: Asymmetry. 16:3147-3153
Designed to distinguish between the enantiomers of compounds possessing commonly occurring structural features, the chiral selector used in the chiral stationary phase (CSP) 1 (Whelk-O1) is broadly applicable. In an effort to further the understandin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f00d0a81fe5df5f0538796d87a0d1ac
https://doi.org/10.1016/j.tetasy.2005.08.027
https://doi.org/10.1016/j.tetasy.2005.08.027
Publikováno v:
Tetrahedron. 61:7562-7567
Enantioselective partitioning of racemic N-3,5-(dinitrobenzoyl)leucine or racemic naproxen was studied using a two-component chiral phase transfer approach. A combination of an achiral ion-pairing reagent and a chiral complexing agent (selector) is n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5bea52bce484fcbfde60d5bc7eaa772
https://doi.org/10.1016/j.tet.2005.05.060
https://doi.org/10.1016/j.tet.2005.05.060
Publikováno v:
The Journal of Organic Chemistry. 70:4073-4081
[reaction: see text] A detailed study concerning the formation of Meisenheimer adducts in biphasic solvent systems is described. The process relies on utilizing a significantly lipophilic quaternary ammonium salt to transfer a nucleophile (e.g., hydr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::059cb83971767e53ce3b1a13dbb6cfa0
https://doi.org/10.1021/jo0502495
https://doi.org/10.1021/jo0502495