SEARCH Articles Figures Tables 2-substituted thiophenes Electrophilic Substitution Reactions of Pyrrole, Furan, and Thiophene Electrophilic substitution of thiophenes Electrophilicity, and Furan and Pyrrole Furan and thiophene Furan substitution Furans 2-substituted Of pyrrole Of thiophene Pyrrole electrophilic substitution Pyrrole, Furan and Thiophene Pyrroles electrophilic Pyrroles electrophilic substitution Pyrroles substitution Substitution thiophene Thiophenes and furans Thiophenes electrophilic substitutions Thiophenes substitution