23056-54-4Relevant academic research and scientific papers
Solvent Effects on Rate of Nucleophilic Reaction: Methylation of 2,4,6-Triphenyl-Pyridine
Elshafie, S. M. M.
, p. 1240 - 1246 (2007/10/02)
The second-order rate constants for the reaction of 2,4,6-trimethylpyridine with methyl iodide in different solvents have been determined.Comprehensive studies of different solvatochromic parameters with the reaction velocity of the Menschutkin reaction were determined.It is found that there is reasonable linearity between the logarithms of the reaction rate constant and TAFT, ABBOUD and KAMLET; α, β, ?* and ΔG(excit.)s, solvent parameters.
Effect of Substituent Functional Groups on Nucleophilic Reaction Velocity: Determination of Quaternization Rates with Methyl Iodide for Poly-Substituted Pyridines
Elshafie, S.M.M.
, p. 647 - 651 (2007/10/02)
Reaction velocity of differently substituted-pyridines by aralphyl groups are determined by direct methylation with methyl iodide in two dipolar-aprotic solvents, dimethylsulphoxide and dimethylformamide.Additional alkyl and aryl substituent groups increases the reaction rate constants which are directly dependent on the number, kind, and position of the substituent groups.
Reinvestigation of Thesing's Synthesis of 2-Pyridones using 1-(Methylthio-thiocarbonylmethyl)pyridinium Iodide
A Gloria
, p. 245 - 252 (2007/10/02)
Starting from 1-(methylthiocarbonylmethyl)pyridinium iodide 1, several attemps were made to prepare 4,6-diaryl-2-pyridothiones.Synthesis of thioamides 2-10 was produced easily and with high yield, but thioamide behaves as a bad stabylising group.A modifie
