All Stories

  1. Revealing the Mechanism of Alcohol Side Product Formation in Crown Ether-Mediated Nucleophilic Fluorination Using Acetonitrile as Solvent
  2. Nucleophilic Fluorination of a Secondary Alkyl Bromide with KF(18‐Crown‐6) and Bulky Diols: Microsolvation Causes Chemoselectivity Inversion in the Free Energy Profile
  3. Reversal of Regioselectivity in the Nucleophilic Fluorination of 1,2‐Dimesylate with Potassium Fluoride and 18‐Crown‐6
  4. Bioactive bergenin derivatives from Endopleura uchi amazonian plant: synthesis, chemical reactivity and anti-tumoral activity
  5. Flavanone‐enabled CuAAC Reaction: Noninnocent Reagents Driving a Mononuclear Mechanism Over the Dinuclear Paradigm
  6. Effects of Hydrogen Bonding Solvation by Diverse Fluorinated Bulky Alcohols on the Reaction Rate and Selectivity in Crown Ether Mediated Nucleophilic Fluorination in an Aprotic Solvent
  7. Theoretical design of new ligands to boost reaction rate and selectivity in palladium‐catalyzed aromatic fluorination
  8. Hybrid Cluster-Continuum Method for Single-Ion Solvation Free Energy in Acetonitrile Solvent
  9. Bifunctional iminophosphorane organocatalyst with additional hydrogen bonding: Calculations predict enhanced catalytic performance in a michael addition reaction
  10. Elucidating the Origin of Regioselectivity in Palladium-Catalyzed Aromatic Fluorination: Mechanistic Investigation and Microkinetic Analysis
  11. Modeling the alkylation of amines with alkyl bromides: explaining the low selectivity due to multiple alkylation
  12. Hydrogenation of CO2 to CH3OH catalyzed by a ruthenium-triphos complex: Theoretical free energy profile and microkinetic modeling
  13. Trifluoromethyl anion: Generation, stability, and SNAr reactivity in crown ether complex analyzed by theoretical calculations
  14. Photochemical radical benzylic bromination with Br2: Computational modeling of the mechanism and microkinetic
  15. Accelerating SN2 nucleophilic fluorination of primary alkyl bromide using an 18-crown-6 and fluorinated bulky alcohol phase transfer system
  16. Formation of α,β-Unsaturated Imines in Apolar Aprotic Solvent: Effect of Hidden Acid Catalysts Analyzed by Theoretical Calculations
  17. Carboxylic acid catalysis on the imine formation versus aza‐Michael reaction in apolar aprotic solvent
  18. Copper-Catalyzed Aromatic Fluorination of 2-(2-bromophenyl)pyridine via Cu(I)/Cu(III) Mechanism in Acetonitrile Solvent: Cluster-Continuum Free Energy Profile and Microkinetic Analysis
  19. Copper-mediated aromatic fluorination using N-heterocycle-carbene ligand: Free energy profile of the Cu(I)/Cu(III) and Cu(II) radical mechanisms
  20. Car-Parrinello molecular dynamics study of CuF, AgF, CuPF6 and AgPF6 in acetonitrile solvent and Cluster-Continuum calculation of the solvation free energy of Cu(I), Ag(I) and Li(I)
  21. SN2 versus E2 reactions in a complex microsolvated environment: theoretical analysis of the equilibrium and activation steps of a nucleophilic fluorination
  22. QM/MM and molecular dynamics simulation of the structure and dissociation of CuF in acetonitrile solvent
  23. AVALIAÇÃO DOS CIENTISTAS: UTILIZAMOS AS MÉTRICAS CORRETAS?
  24. Friedel-Crafts Reaction: Theoretical Study of the Mechanism of Benzene Alkylation with Isopropyl Chloride Catalyzed by AlCl3 and Al2Cl6
  25. Bifunctional Primary Amino‐thiourea Asymmetric Catalysis: The Imine‐Iminium Ion Mechanism in the Michael Addition of Nitromethane to Enone
  26. Catalytic cycle and off-cycle steps in the palladium-catalyzed fluorination of aryl bromide with biaryl monophosphine ligands: Theoretical free energy profile
  27. Diradical character of the bond breaking in the reaction of Br2 with benzene: Reliable barriers using the CR-CC(2,3) method
  28. Phenol alkylation under phase transfer catalysis conditions: Insights on the mechanism and kinetics from computations
  29. FORMAÇÃO DE AZEÓTROPOS DO PONTO DE VISTA DA TERMODINÂMICA DE SOLVATAÇÃO
  30. Single-ion solvation free energy: A new cluster–continuum approach based on the cluster expansion method
  31. The role of intermolecular forces in ionic reactions: the solvent effect, ion-pairing, aggregates and structured environment
  32. Micro-solvation and counter ion effects on ionic reactions: Activation of potassium fluoride with 18-crown-6 and tert-butanol in aprotic solvents
  33. The role of carboxylic acid impurity in the mechanism of the formation of aldimines in aprotic solvents
  34. Nucleophilic Fluorination with KF Catalyzed by 18-Crown-6 and Bulky Diols: A Theoretical and Experimental Study
  35. Hydroperoxo on the Niobium Oxyhydroxide Surface as the Active Species in the Catalyzed Oxidation of Organic Sulfide by Hydrogen Peroxide
  36. Reactivity and stability of ion pairs, dimers and tetramers versus solvent polarity: SNAr fluorination of 2-bromobenzonitrile with tetramethylammonium fluoride
  37. Mechanisms of the formation of imines in aqueous solution and the effect of the pH: a theoretical analysis
  38. Theoretical design of new macrocycles for nucleophilic fluorination with KF: thiourea-crown-ether is predicted to overcome [2.2.2]-cryptand
  39. Theoretical free energy profile and benchmarking of functionals for amino-thiourea organocatalyzed nitro-Michael addition reaction
  40. Synthesis and characterization of 1,3,5-triarylpyrazol-4-ols and 3,5-diarylisoxazol-4-ols from chalcones and theoretical studies of the stability of pyrazol-4-ol toward acid dehydration
  41. Free Energy Profile of a Model Palladium Catalyzed Fluorination of Aryl Bromide with Cesium Fluoride
  42. Second harmonic generation in pyrazoline derivatives of dibenzylideneacetones and chalcone: A combined experimental and theoretical approach
  43. Is the iminium ion mechanism viable in the piperidine-catalyzed 1,4-conjugate addition reaction of nitroalkanes to α,β-unsaturated ketones?
  44. Hybrid discrete‐continuum solvation methods
  45. Counter-ion and solvent effects in the C- and O-alkylation of the phenoxide ion with allyl chloride
  46. How difficult are anion-molecule SNAr reactions of unactivated arenes in the gas phase, dimethyl sulfoxide, and methanol solvents?
  47. Theoretical study of the mechanism and regioselectivity of the alkylation reaction of the phenoxide ion in polar protic and aprotic solvents
  48. Free energy profile and microkinetic modeling of base-catalyzed conjugate addition reaction of nitroalkanes to α,β-unsaturated ketones in polar and apolar solvents
  49. Cleaving paraoxon with hydroxylamine: Ammonium oxide isomer favors a Frontside attack mechanism
  50. Mechanism of nucleophilic fluorination promoted by bis-tert -alcohol-functionalized crown-6-calix[4]arene
  51. Solvent selection for chemical reactions: automated computational screening of solvents using the SMD model
  52. Infinite dilution activity coefficient from SMD calculations: accuracy and performance for predicting liquid-liquid equilibria
  53. New catalytic strategy to add fluorine to organic molecules using cheap potassium fluoride salt
  54. Cluster expansion of the solvation free energy difference: Systematic improvements in the solvation of single ions
  55. Mechanism of the Piperidine-Catalyzed Knoevenagel Condensation Reaction in Methanol: The Role of Iminium and Enolate Ions
  56. Cesium fluoride and potassium fluoride ion pair nucleophilic fluorination in protic solvent
  57. Fast Screening of Solvents for Simultaneous Extraction of Furfural, 5-Hydroxymethylfurfural and Levulinic Acid from Aqueous Solution Using SMD Solvation Free Energies
  58. CMIRS Solvation Model for Methanol: Parametrization, Testing, and Comparison with SMD, SM8, and COSMO-RS
  59. Theoretical Design and Calculation of a Crown Ether Phase-Transfer-Catalyst Scaffold for Nucleophilic Fluorination Merging Two Catalytic Concepts
  60. A comprehensive theoretical investigation of the transition states and a proposed kinetic model for the cinchoninium ion asymmetric phase-transfer catalyzed alkylation reaction
  61. BUILDING THE LIQUID-VAPOUR EQUILIBRIUM CURVE THROUGH A CUBIC EQUATION OF STATE: USE OF EXCEL FOR TEACHING PHYSICAL-CHEMISTRY
  62. Mechanism and free energy profile of base-catalyzed Knoevenagel condensation reaction
  63. How Accurate is the SMD Model for Predicting Free Energy Barriers for Nucleophilic Substitution Reactions in Polar Protic and Dipolar Aprotic Solvents?
  64. The role of ammonia oxide in the reaction of hydroxylamine with carboxylic esters
  65. Cluster-continuum quasichemical theory calculation of the lithium ion solvation in water, acetonitrile and dimethyl sulfoxide: an absolute single-ion solvation free energy scale
  66. Prediction of Phase Separation Using a Modified Regular Solution Theory and the SMD Continuum Solvation Model
  67. Performance of the SMD and SM8 models for predicting solvation free energy of neutral solutes in methanol, dimethyl sulfoxide and acetonitrile
  68. Acid-catalyzed transesterification and esterification in methanol: a theoretical cluster-continuum investigation of the mechanisms and free energy barriers
  69. Electron affinity and dipole moment of 1,2,4,5-tetraoxanes antimalarials and correlation with activity against Plasmodium falciparum
  70. Theoretical Prediction of p K a in Methanol: Testing SM8 and SMD Models for Carboxylic Acids, Phenols, and Amines
  71. Amphiphilic niobium oxyhydroxide as a hybrid catalyst for sulfur removal from fuel in a biphasic system
  72. Prediction of the pH-rate profile for dimethyl sulfide oxidation by hydrogen peroxide: The role of elusive H3 O2 + Ion
  73. Revisiting the Mechanism of Neutral Hydrolysis of Esters: Water Autoionization Mechanisms with Acid or Base Initiation Pathways
  74. Absolute Single-Ion Solvation Free Energy Scale in Methanol Determined by the Lithium Cluster-Continuum Approach
  75. Unraveling the Mechanism of the Cinchoninium Ion Asymmetric Phase-Transfer-Catalyzed Alkylation Reaction
  76. New insights on reaction pathway selectivity promoted by crown ether phase-transfer catalysis: Model ab initio calculations of nucleophilic fluorination
  77. Stability of hydroxylamine isomers in aqueous solution: Ab initio study using continuum, cluster-continuum and Shells Theory of Solvation
  78. Chemical reactions inside structured nano-environment: SN2vs. E2 reactions for the F−+ CH3CH2Cl system
  79. Dynamical Discrete/Continuum Linear Response Shells Theory of Solvation: Convergence Test for NH 4 + and OH − Ions in Water Solution Using DFT and DFTB Methods
  80. Shells theory of solvation and the long-range Born correction
  81. Intramolecular Catalysis of Phosphodiester Hydrolysis by Two Imidazoles
  82. First Solvation Shell Effects on Ionic Chemical Reactions: New Insights for Supramolecular Catalysis
  83. Jacobsen’s Catalyst Interaction with Polydimethylsiloxane/Tetraethoxysilane Network and Solvent Molecules: Theoretical Design of a New Polymeric Membrane
  84. Ab initio study of the Cl+H2S atmospheric reaction: is there a breakdown of the transition state theory?
  85. Effects of ion-pairing and hydration on the SNAr reaction of the F−with p-chlorobenzonitrile in aprotic solvents
  86. Ab Initio, Density Functional Theory, and Continuum Solvation Model Prediction of the Product Ratio in the S N 2 Reaction of NO 2 - with CH 3 CH 2 Cl and CH 3 CH 2 Br in DMSO Solution
  87. Chemoselective Nucleophilic Fluorination Induced by Selective Solvation of the S N 2 Transition State
  88. Rate acceleration of SN2 reactions through selective solvation of the transition state
  89. Regioselective organocatalysis: a theoretical prediction of the selective rate acceleration of the SN2 reaction between an acetate ion and primary alkyl chlorides in DMSO solution
  90. Design of an organocatalyst for ion–molecule SN2 reactions: A new solvent effect on the reaction rate predicted by ab initio calculations
  91. Absolute solvation free energy of Li+ and Na+ ions in dimethyl sulfoxide solution: A theoretical ab initio and cluster-continuum model study
  92. Chemisorption of SO2 on graphite surface: A theoretical ab initio and ideal lattice gas model study
  93. Ab Initio Study of the SN2 and E2 Mechanisms in the Reaction between the Cyanide Ion and Ethyl Chloride in Dimethyl Sulfoxide Solution
  94. Modeling Protic to Dipolar Aprotic Solvent Rate Acceleration and Leaving Group Effects in S N 2 Reactions:  A Theoretical Study of the Reaction of Acetate Ion with Ethyl Halides in Aqueous and Dimethyl Sulfoxide Solutions
  95. Basic hydrolysis of formamide in aqueous solution: a reliable theoretical calculation of the activation free energy using the cluster-continuum model
  96. Free Energy Profile of the Reaction between the Hydroxide Ion and Ethyl Acetate in Aqueous and Dimethyl Sulfoxide Solutions:  A Theoretical Analysis of the Changes Induced by the Solvent on the Different Reaction Pathways
  97. Ionization of Organic Acids in Dimethyl Sulfoxide Solution:  A Theoretical Ab Initio Calculation of the p K a Using a New Parametrization of the Polarizable Continuum Model
  98. Reply to comment on: ‘Thermodynamic cycles and the calculation of pKa’ [Chem. Phys. Lett. 367 (2003) 145]
  99. Ligand exchange ion–molecule reactions of simple silyl and germyl cations
  100. Thermodynamic cycles and the calculation of pKa
  101. Theoretical Calculation of p K a Using the Cluster−Continuum Model
  102. Parametrization of the PCM model for calculating solvation free energy of anions in dimethyl sulfoxide solutions
  103. Gibbs energy of solvation of organic ions in aqueous and dimethyl sulfoxide solutions
  104. Theoretical Study of the Gas-Phase Reaction of Fluoride and Chloride Ions with Methyl Formate
  105. The Cluster−Continuum Model for the Calculation of the Solvation Free Energy of Ionic Species
  106. New values for the absolute solvation free energy of univalent ions in aqueous solution
  107. On the Calculation of the Absolute Solvation Free Energy of Ionic Species:  Application of the Extrapolation Method to the Hydroxide Ion in Aqueous Solution
  108. Ab initio study of the hydroxide ion–water clusters: An accurate determination of the thermodynamic properties for the processes nH2O+OH−→HO−(H2O)n (n=1–4)
  109. Electronic spectra of the nitrile ylides: an ab initio multiconfigurational second-order quasidegenerate perturbation theory study
  110. Revisiting the reactions of nucleophiles with arenediazonium ions: dediazoniation of arenediazonium salts in aqueous and micellar solutions containing alkyl sulfates and alkanesulfonates and an ab initio analysis of the reaction pathway
  111. Singlet−Triplet Gap, and the Electronic and Vibrational Spectra of Chlorophenylcarbene:  A Combined Theoretical and Experimental Study
  112. A New Mechanism for the Reaction of Carbenes with OH Groups
  113. Ab initio conformational analysis of cyclooctane molecule
  114. Kinetics of the H2O+CCl2 reaction in gas phase and in solution by an insertion mechanism
  115. Free radical mechanism of the Cl2 addition to acetylene
  116. Absolute proton affinity and basicity of the carbenes CH2, CF2, CCl2, C(OH)2, FCOH, CPh2 and fluorenylidene
  117. Analysis of state-to-state differential cross sections in two-dimensional Xe- CO 2 scattering with long-range effects
  118. A comparison of state-to-state rotational total cross sections using two- and three-dimensional close coupled approaches
  119. Searching for the ylide structure. An ab initio study of the H2O…CCl2 complex
  120. Reaction Paths for Aqueous Decomposition of CCl 2
  121. Ab initio
  122. Quantum and classical two-dimensional analysis of rainbow structures in the Xe+ CO 2 rotational excitation at 0.2 eV collision energy and on a repulsive potential