Electrophilic substitutions in five-membered heterocyclic systems. Part VII. The reactivity of selenophen towards electrophiles. A comparison with thiophen
Abstract
The relative reactivities of selenophen and thiophen in five electrophilic substitutions have been determined by kinetic or competitive procedures. The results have been compared with those available in the literature for furan. In all the reactions examined selenophen exhibits a reactivity intermediate between furan and thiophen.