Proximity effect induced by hydrogen-bonding association. A detailed kinetic study
作者:Gianfranco Ercolani、Alessia Scripilliti
DOI:10.1016/0040-4039(95)02083-7
日期:1996.1
The proximityeffectinduced on a carboxylate by an urea binding site positioned near an electrophilic centre, as exemplified by the reaction of butanoate ion with the compound 1, has been investigated in DMF at 25 °C. The maximum catalytic effect observed at low butanoate concentrations is ca. 11. The proximityeffect as measured by the effective molarity of the intramolecular process is ca. 3 mol