Reliable σ+ values for some strong resonance donor substituents
Abstract
Relible σ+ constants for some strong resonance donor substituents are evaluated by the Extended Selectivity Treatment leading to the following values: σ+p-OH=-0·92, σ+p-OPh=-0·56, σ+p-NHCOMe=-0·69, σ+p-NH2=-1·31, and σ+p-NMe2=-1·50.