Browsing "화학·나노과학전공" byAuthorUm I.-H.

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Showing results 123 to 152 of 175

Issue DateTitleAuthor(s)Type
2013Leaving-group substituent controls reactivity and reaction mechanism in aminolysis of phenyl y-substituted-phenyl carbonates엄익환Article
2012Mechanistic assessment of S NAr displacement of halides from 1-Halo-2,4-dinitrobenzenes by selected primary and secondary amines: Brønsted and Mayr analyses엄익환Article
2017Medium effect (water versus MeCN) on reactivity and reaction pathways for the SNAr reaction of 1-aryloxy-2,4-dinitrobenzenes with cyclic secondary amines엄익환Article
2006Medium effects on the α-effect in DMSO-H2O mixtures - Comparative studies of p-nitrophenyl benzoate and acetate - Dissection of ground-state and transition-state effects엄익환Article
2011Metal ion catalysis and inhibition in nucleophilic substitution reactions of 4-nitrophenyl nicotinate and isonicotinate with alkali metal ethoxides in anhydrous ethanol엄익환Article
2010Metal ion catalysis in nucleophilic displacement reactions of 2-pyridyl X-substituted benzoates with potassium ethoxide in anhydrous ethanol엄익환Article
2010Metal ion catalysis in nucleophilic substitution reaction of 4-nitrophenyl picolinate with alkali metal ethoxides in anhydrous ethanol엄익환Article
2013Metal-ion catalysis in alkaline ethanolysis of 2-pyridyl thionobenzoate: Effects of modification of electrophilic center from C=O to C=S엄익환Article
2010Michael-type reactions of 1-(X-substituted phenyl)-2-propyn-1-ones with alicyclic secondary amines in MeCN and H2O: Effect of medium on reactivity and transition-state structure엄익환Article
2006Modification of both the electrophilic center and substituents on the nonleaving group in pyridinolysis of O-4-nitrophenyl benzoate and thionobenzoates엄익환Article
2010Nonlinear Hammett plots in pyridinolysis of 2,4-dinitrophenyl X-substituted benzoates: Change in RDS versus resonance contribution엄익환Article
2015Nucleophilic Substitution Reactions of 2,4-Dinitrophenyl X-Substituted-Benzenesulfonates and Y-Substituted-Phenyl 4-Nitrobenzenesulfonates with Azide Ion: Regioselectivity and Reaction Mechanism엄익환; 한소엽Article
2013Nucleophilic substitution reactions of phenyl y-substituted-phenyl carbonates with butane-2,3-dione monoximate and 4-chlorophenoxide: Origin of the α-effect엄익환Article
2014Nucleophilic substitution reactions of Y-Substituted-Phenyl Benzoates with Potassium Ethoxide in Anhydrous Ethanol: Reaction Mechanism and Role of K+ Ion엄익환Article
2009Origin of the α-effect in aminolysis of y-substituted phenyl diphenylphosphinates: Ground-state versus transition-state contribution엄익환Article
2013Origin of the α-effect in detoxification of paraoxon and parathion by hydrogen peroxide anion엄익환Article
2009Origin of the α-effect in nucleophilic substitution reactions of y-substituted phenyl benzoates with butane-2,3-dione monoximate and z-substituted phenoxides: Ground-state destabilization vs. transition-state stabilization엄익환Article
2010Piperidinolysis of 4-Nitrophenyl X-Substituted benzenesulfonates and related compounds: Effect of changing leaving group and electrophilic center엄익환Article
2010Pitfalls in assessing the α-effect: Reactions of substituted phenyl methanesulfonates with HOO-, OH-, and substituted phenoxides in H2O엄익환Article
2010Pyridinolyses of 2,4-dinitrophenyl phenyl carbonate and 2,4-dinitrophenyl benzoate: Effect of nonleaving group on reactivity and mechanism엄익환Article
2011Pyridinolysis of 2,4-dinitrophenyl phenyl thionocarbonate: Effect of changing electrophilic center from c=o to c=s on reactivity and mechanism엄익환Article
2003Regioselectivity and the nature of the reaction mechanism in nucleophilic substitution reactions of 2,4-dinitrophenyl X-substituted benzenesulfonates with primary amines엄익환Article
2002Reinterpretation of curved hammett plots in reaction of nucleophiles with aryl benzoates: Change in rate-determining step or mechanism versus ground-state stabilization엄익환Article
2001Remarkable catalytic effect of H+ in Michael-type additions of anilines to 3-butyn-2-one엄익환Article
2015S<inf>N</inf>Ar reactions of 1-halo-2,4-dinitrobenzenes with alkali-metal ethoxides: Differential stabilization of ground state and transition state determines alkali-metal ion catalysis or inhibition엄익환Article
2003Significant and differential acceleration of dephosphorylation of the insecticides, paraoxon and parathion, caused by alkali metal ethoxides엄익환Article
1992Solvent effect on rate for anionic nucleophilic substitution reaction of 4-nitrophenyl acetate in aqueous acetonitrile권동숙; 엄익환Article
2001Solvent effect on the α-effect for the reactions of aryl acetates with butane-2,3-dione monoximate and p-chlorophenoxide in MeCN-H2O mixtures엄익환Article
2006Solvent effect on the α-effect: Ground-state versus transition-state effects; a combined calorimetric and kinetic investigation엄익환Article
2013Structure-reactivity correlations in nucleophilic displacement reactions of Y-substituted-phenyl X-substituted-cinnamates with Z-substituted-phenoxides엄익환Article

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