Jj. Wang et al., SYNTHESIS OF DIFLUOROALKYLPYRROLIC COMPOUNDS FROM (DIETHYLAMINO)SULFUR TRIFLUORIDE AND ACYLPYRROLES, Tetrahedron letters, 36(14), 1995, pp. 2389-2392
Several difluoroalkylpyrrolic compounds with different functional grou
ps have been synthesized by the reaction of DAST ((diethylamino)sulfur
trifluoride) with the corresponding N-H protected acylpyrroles in 68-
87% yields. It was found that N-H protection was necessary to make the
reactions successful.