Correlation of the Rates of Solvolysis of Methyl Fluoroformate Using the Extended Grunwald-Winstein Equation

Bulletin of the Korean chemical society

Jin Burm Kyong¹  Song Hee Choi¹  Dong Kook Kim¹  Dennis N Kevill¹  Yong Woo Lee¹  Mi Hye Seong¹ 

关键词: Methyl fluoroformate;    Addition-elimination;    Grunwald-Winstein equation;    Solvent isotope effect;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The specific rates of solvolysis of methyl fluoroformate have been measured at 40.0 oC in several hydroxylic solvents. Analysis with the extended Grunwald-Winstein equation leads to sensitivities toward changes in solvent nucleophilicity (l) of 1.33 �? 0.10 and toward changes in solvent ionizing power (m) 0.73 �? 0.06. For methanolysis, a solvent deuterium isotope effect of 3.98 is compatible with the incorporation of general-base catalysis into the substitution process. For four representative solvents, studies were made at several temperatures and activation parameters determined. These observations are also compared with those previously reported for alkyl halogenoformate esters and mechanistic conclusions are drawn.

【 授权许可】

Unknown