Metal ion effects on the rate of intramolecular O-alkylation of the anion of ethyl(3-chloropropyl)acetoacetate
作者:Roberta Cacciapaglia、Luigi Mandolini
DOI:10.1016/s0040-4020(01)86699-0
日期:1990.1
The retarding effect of alkali metal and alkaline-earth metal ions on the rate of intramolecular O-alkylation of the title compound has been thoroughly investigated in 99% aqueous Me2SO at 25° C. Rate data have been dissected into contributions of free ions (ki) and ionpairs (kip). Comparison of the present results with available data for intramolecular C-alkylation of a strictly related system, reveals