Structure−Reactivity Relationships for Addition of Sulfur Nucleophiles to Electrophilic Carbon: Resonance, Polarization, and Steric/Electrostatic Effects
作者:Maria M. Toteva、John P. Richard
DOI:10.1021/ja0021868
日期:2000.11.1
to those for addition of substituted alkyl alcohol ROH to the much more electrophilic 1-(4-methoxyphenyl)ethyl carbocation (5+). The larger value of βnuc = 0.32 for addition of ROH to 5+ than βnuc = 0.11 for addition of RS- to 1 shows that there are important differences in the reaction coordinate profiles for these nucleophile addition reac...
Yi, Geun-Bae; Khan, Masood A.; Richter-Addo, George B., Inorganic Chemistry, 1996, vol. 35, # 12, p. 3453 - 3454
作者:Yi, Geun-Bae、Khan, Masood A.、Richter-Addo, George B.
DOI:——
日期:——
Reactions of [Aryloxy(phenyl)carbene]pentacarbonylchromium(0) Complexes with Thiolate Ions. Decreasing Reactivity with Increasing Basicity of the Nucleophile
作者:Claude F. Bernasconi、Moisés Pérez-Lorenzo、Sara J. Codding
DOI:10.1021/jo701422z
日期:2007.12.1
A kinetic study of the reactions of thiolate ions with three Fischer-type [aryloxy(phenyl)carbene]pentacarbonyl chromium(0) complexes in 50% MeCN−50% water (v/v) is reported. Brønsted plots of the second-order rate constants are biphasic with an initial steep rise for weakly basic thiolate ions (βnuc ≈ 1.0) followed by a slightly descending leg with a negative slope (βnuc ≈ −0.2) for strongly basic