Strain-induced mechanism change: the limit of strain tolerance in intramolecular nucleophilic substitution?
作者:Stephen M. Jeffery、Stefan Niedoba、Charles J. M. Stirling
DOI:10.1039/c39920000650
日期:——
The limit of strain energy differential for intramolecular nucleophilic substitution via a sulfonyl-stabilised carbanion to give cyclopropane analogues in hydroxylic solvents is around 160 kJ mol–1; above this level, concerted, albeit unactivated, 1,2-elimination is preferred.