Search Results - "Im, Li-Ra" :: K.UTB vyhledávací portál

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The α-Effect and Mechanism of Reactions of Y-Substituted Phenyl Benzenesulfonates with Hydrogen Peroxide Ion

by Li-Ra Im, 엄익환
Published in Bulletin of the Korean Chemical Society (20.10.2009)

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Aminolysis of 2,4-Dinitrophenyl and 3,4-Dinitrophenyl Diphenylphosphinothioates: Steric Hindrance versus Nucleofugality in Nucleophilic Substitution Reactions

by Im, Li-Ra, Min, Ji-Sook, Akhtar, Kalsoom, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (20.06.2011)

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Nonlinear Hammett plots in pyridinolysis of 2,4-dinitrophenyl X-substituted benzoates: change in RDS versus resonance contribution

by Um, Ik-Hwan, Im, Li-Ra, Kim, Eun-Hee, Shin, Ji Hye
Published in Organic & biomolecular chemistry (2010)

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Metal Ion Catalysis in Nucleophilic Displacement Reactions of 2-Pyridyl X-Substituted Benzoates with Potassium Ethoxide in Anhydrous Ethanol

by Lee, Jae-In, Kang, Ji-Sun, Im, Li-Ra, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (20.12.2010)

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Aminolysis of S-4-Nitrophenyl X-Substituted Thiobenzoates: Effect of Nonleaving-Group Substituents on Reactivity and Mechanism

by Im, Li-Ra, Jeon, Sang-Eun, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (20.04.2011)

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A Mechanistic Study on Alkaline Hydrolysis of Y-Substituted Phenyl Benzenesulfonates

by 엄익환, Li-Ra Im, Youn-Min Park
Published in Bulletin of the Korean Chemical Society (20.12.2008)

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Kinetic and Theoretical Studies on Pyridinolysis of 2,4-Dinitrophenyl X-Substituted Benzoates: Effect of Substituent X on Reactivity and Mechanism

by Um, Ik-Hwan, Kim, Eun-Hee, Im, Li-Ra, Mishima, Masaaki
Published in Bulletin of the Korean Chemical Society (20.09.2010)

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Aminolysis of S-4-Nitrophenyl X-Substituted Thiobenzoates: Effect of Nonleaving-Group Substituents on Reactivity and Mechanism

by Im, Li-Ra, Jeon, Sang-Eun, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (2011)

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Pitfalls in Assessing the α-Effect: Reactions of Substituted Phenyl Methanesulfonates with HOO−, OH−, and Substituted Phenoxides in H2O

by Um, Ik-Hwan, Im, Li-Ra, Buncel, Erwin
Published in Journal of organic chemistry (17.12.2010)

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The α-Effect and Mechanism of Reactions of Y-Substituted Phenyl Benzenesulfonates with Hydrogen Peroxide Ion

by Im, Li-Ra, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (2009)

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Aminolysis of 2,4-Dinitrophenyl and 3,4-Dinitrophenyl Diphenylphosphinothioates: Steric Hindrance versus Nucleofugality in Nucleophilic Substitution Reactions

by Im, Li-Ra, Min, Ji-Sook, Akhtar, Kalsoom, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (2011)

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Metal Ion Catalysis in Nucleophilic Displacement Reactions of 2-Pyridyl X-Substituted Benzoates with Potassium Ethoxide in Anhydrous Ethanol

by Lee, Jae-In, Kang, Ji-Sun, Im, Li-Ra, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (2010)

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A Kinetic Study on Aminolysis of 2-Pyridyl X-Substituted Benzoates: Effect of Changing Leaving Group from 4-Nitrophenolate to 2-Pyridinolate on Reactivity and Mechanism

by Lee, Jong-Pal, Bae, Ae-Ri, Im, Li-Ra, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (2010)

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Kinetic and Theoretical Studies on Pyridinolysis of 2,4-Dinitrophenyl X-Substituted Benzoates: Effect of Substituent X on Reactivity and Mechanism

by Um, Ik-Hwan, Kim, Eun-Hee, Im, Li-Ra, Mishima, Masaaki
Published in Bulletin of the Korean Chemical Society (2010)

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A Mechanistic Study on Alkaline Hydrolysis of Y-Substituted Phenyl Benzenesulfonates

by Im, Li-Ra, Park, Youn-Min, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (2008)

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A Kinetic Study on Aminolysis of 2-Pyridyl X-Substituted Benzoates: Effect of Changing Leaving Group from 4-Nitrophenolate to 2-Pyridinolate on Reactivity and Mechanism

by Lee, Jong-Pal, Bae, Ae-Ri, Im, Li-Ra, Um, Ik-Hwan
Published in Bulletin of the Korean Chemical Society (20.12.2010)

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Mechanistic Assessment of SNAr Displacement of Halides from 1‑Halo-2,4-dinitrobenzenes by Selected Primary and Secondary Amines: Brønsted and Mayr Analyses

by Um, Ik-Hwan, Im, Li-Ra, Kang, Ji-Sun, Bursey, Samantha S, Dust, Julian M
Published in Journal of organic chemistry (02.11.2012)

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Nonlinear Hammett plots in pyridinolysis of 2,4-dinitrophenyl X-substituted benzoates: change in RDS versus resonance contribution

by Um, Ik-Hwan, Im, Li-Ra, Kim, Eun-Hee, Shin, Ji Hye
Published in Organic & biomolecular chemistry (21.08.2010)

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Mechanistic Assessment of S N Ar Displacement of Halides from 1-Halo-2,4-dinitrobenzenes by Selected Primary and Secondary Amines: Brønsted and Mayr Analyses

by Um, Ik-Hwan, Im, Li-Ra, Kang, Ji-Sun, Bursey, Samantha S., Dust, Julian M.
Published in Journal of organic chemistry (02.11.2012)

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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

by Um, Ik-Hwan, Im, Li-Ra, Buncel, Erwin
Published in Journal of organic chemistry (17.12.2010)

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