N. Kamigata et al., A NOVEL PERFLUOROALKYLATION OF PYRROLES WITH PERFLUOROALKANESULFONYL CHLORIDE CATALYZED BY A RUTHENIUM(II) PHOSPHINE COMPLEX, Synthetic communications, 24(14), 1994, pp. 2049-2055
Direct perfluoroalkylation of N-substituted pyrroles with tridecafluor
ohexanesulfonyl chloride catalyzed by a ruthenium(II) phosphine comple
x proceeds regioselectively in high yield.