σHet Values for thia- and oxa-substituents in five-membered heterocycles are derived from the rate constants for the reactions of sulphonyl chlorides with aniline in methanol. These values, which are negative and similar to σ+, are in agreement with the S AN mechanism previously proposed.
|Titolo:||Substituent effects in five-membered rings: σHet constants for thiaand oxa-substituents from the reaction of arenesulphonyl chlorides with aniline|
|Data di pubblicazione:||1976|
|Appare nelle tipologie:||1.1 Articolo in rivista|