... Tetrahedron Letters. Volume 49, Issue 7, 11 February 2008, Pages 1184–1187. Cover image Cover image. A new synthetic route to 3-polyfluoroalkyl-containing pyrroles. ... Yields of pyrroles 6 and 7. 3–7, R 2, R 3, R F, 6 Yield (%), R, 7 Yield (%). a, H, H, CF 3, 65 a, OH, —. ...