Publications by authors named "Erwin Buncel"

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Binding of Sulfonamide Antibiotics to CTABr Micelles Characterized Using (1)H NMR Spectroscopy.
Ashish K Sarker, Patrick J Cashin, Vimal K Balakrishnan, Kirsten Exall, Erwin Buncel

Langmuir· August 2016

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Evidence for a catalytic six-membered cyclic transition state in aminolysis of 4-nitrophenyl 3,5-dinitrobenzoate in acetonitrile: comparative brønsted-type plot, entropy of activation, and deuterium kinetic isotope effects.
Ik-Hwan Um, Min-Young Kim, Ae-Ri Bae, Julian M Dust, Erwin Buncel

J Org Chem· January 2015

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Alkali-metal ion catalysis and inhibition in SNAr displacement: relative stabilization of ground state and transition state determines catalysis and inhibition in SNAr reactivity.
Ik-Hwan Um, Hyo-Jin Cho, Min-Young Kim, Erwin Buncel

Chemistry· October 2014

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Switchable polarity solvent (SPS) systems: probing solvatoswitching with a spiropyran (SP)-merocyanine (MC) photoswitch.
Alaina R Boyd, Philip G Jessop, Julian M Dust, Erwin Buncel

Org Biomol Chem· September 2013

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Dissection of activation parameters in the bell-shaped α-effect following solvent modulation (DMSO-H2O media).
Ik-Hwan Um, Ji-Sun Kang, Min-Young Kim, Erwin Buncel

J Org Chem· September 2013

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Rapidly formed quinalphos complexes with transition metal ions characterized by electrospray ionization mass spectrometry.
Bernd O Keller, Abdelhamid A Esbata, Erwin Buncel, Gary W van Loon

Rapid Commun Mass Spectrom· June 2013

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A kinetic study on nucleophilic displacement reactions of aryl benzenesulfonates with potassium ethoxide: role of K+ ion and reaction mechanism deduced from analyses of LFERs and activation parameters.
Ik-Hwan Um, Ji-Sun Kang, Young-Hee Shin, Erwin Buncel

J Org Chem· January 2013

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Photochemical and thermal spiropyran (SP)-merocyanine (MC) interconversion: a dichotomy in dependence on viscosity.
Jamie Whelan, Dalia Abdallah, Konrad Piskorz, James T C Wojtyk, Julian M Dust, Erwin Buncel

Phys Chem Chem Phys· October 2012

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Alkali-metal-ion catalysis and inhibition in the nucleophilic displacement reaction of y-substituted phenyl diphenylphosphinates and diphenylphosphinothioates with alkali-metal ethoxides: effect of changing the electrophilic center from P=O to P=S.
Ik-Hwan Um, Young-Hee Shin, Jee-Eun Park, Ji-Sun Kang, Erwin Buncel

Chemistry· January 2012

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Pitfalls in assessing the α-effect: reactions of substituted phenyl methanesulfonates with HOO(-), OH(-), and substituted phenoxides in H(2)O.
Ik-Hwan Um, Li-Ra Im, Erwin Buncel

J Org Chem· December 2010

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Spirooxazine to merooxazine interconversion in the presence and absence of zinc: approach to a bistable photochemical switch.
Zhiyuan Tian, Robert A Stairs, Martin Wyer, Nicholas Mosey, Julian M Dust, Erwin Buncel

J Phys Chem A· November 2010

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Assessing the superelectrophilic dimension through sigma-complexation, SNAr and Diels-Alder reactivity.
Erwin Buncel, François Terrier

Org Biomol Chem· May 2010

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Energy transfer in the azobenzene-naphthalene light harvesting system.
Dalia Abdallah, Jamie Whelan, Julian M Dust, Shmaryahu Hoz, Erwin Buncel

J Phys Chem A· June 2009

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Effects on the reactivity by changing the electrophilic center from C==O to C==S: contrasting reactivity of hydroxide, p-chlorophenoxide, and butan-2,3-dione monoximate in DMSO/H2O mixtures.
Ik-Hwan Um, Jeong-Yoon Han, Erwin Buncel

Chemistry· February 2009

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1H and 13C NMR assignments for new heterocyclic TAM leuco dyes, (2Z,2'E)-2,2'-(2-phenyl propane-1,3-diylidene) bis(1,3,3-trimethylindoline) derivatives. Part II.
Sam-Rok Keum, Se-Jung Roh, Min-Hyung Lee, Francoise Sauriol, Erwin Buncel

Magn Reson Chem· September 2008

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High sensitivity to transmission of attenuation in the metal activating effect of platinum on sequential H-D exchange at the four C8 sites of inosines in tetrakis(inosine)platinum(II) chloride.
Omoshile Clement, Lewyn Li, Julian M Dust, Erwin Buncel

Org Biomol Chem· August 2008

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Alkali metal ion catalysis and inhibition in nucleophilic displacement reactions at phosphorus centers: ethyl and methyl paraoxon and ethyl and methyl parathion.
Ik-Hwan Um, Young-Hee Shin, Seung-Eun Lee, Kiyull Yang, Erwin Buncel

J Org Chem· February 2008

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Alkaline degradation of the organophosphorus pesticide fenitrothion as mediated by cationic C12, C14, C16, and C18 surfactants.
Xiumei Han, Vimal K Balakrishnan, Erwin Buncel

Langmuir· June 2007

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Mayr electrophilicity predicts the dual Diels-Alder and sigma-adduct formation behaviour of heteroaromatic super-electrophiles.
Sami Lakhdar, Régis Goumont, François Terrier, Taoufik Boubaker, Julian M Dust, Erwin Buncel

Org Biomol Chem· June 2007

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Elucidating the mechanisms of acidochromic spiropyran-merocyanine interconversion.
James T C Wojtyk, Adnaan Wasey, Ning-Ning Xiao, Peter M Kazmaier, Shmaryahu Hoz, Erwin Buncel

J Phys Chem A· April 2007

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Degradation of the pesticide fenitrothion as mediated by cationic surfactants and alpha-nucleophilic reagents.
Xiumei Han, Vimal K Balakrishnan, Gary W VanLoon, Erwin Buncel

Langmuir· October 2006

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Solvent effect on the alpha-effect: ground-state versus transition-state effects; a combined calorimetric and kinetic investigation.
Ik-Hwan Um, So-Jeong Hwang, Erwin Buncel

J Org Chem· February 2006

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Micellar catalyzed degradation of fenitrothion, an organophosphorus pesticide, in solution and soils.
Vimal K Balakrishnan, Erwin Buncel, Gary W Vanloon

Environ Sci Technol· August 2005

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Superacidifiers: assessing the activation and the mode of charge transmission of the extraordinary electron-withdrawing SO2CF3 and S(O)(=NSO2CF3)CF3 substituents in carbanion stabilization.
François Terrier, Emmanuel Magnier, Elyane Kizilian, Claude Wakselman, Erwin Buncel

J Am Chem Soc· April 2005

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Catalysis of the ethanolysis of aryl methyl phenyl phosphinate esters by alkali metal ions: transition state structures for uncatalyzed and metal ion-catalyzed reactions.
Ikenna Onyido, Kendall Albright, Erwin Buncel

Org Biomol Chem· April 2005

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