Bromine-lithium exchange of 3-bromo-1-(triisopropylsilyl) pyrrole 6 fo
llowed by treatment with N-fluorobenzenesulfonimide gave the fluoropyr
role 8. Application of this methodology to the highly functionalized p
yrrole 1 afforded the fluoropyrrole 4, which was found to be inaccessi
ble by other approaches.