Tmahedron Lmers, Vol 36, No. 51, pp 9261.9264, 1995 Elsewer Science Lfd Prmted m Great Britain lKun-4039/95 %9.50+0 00 0040.4039(95)0201Y-5 ... First Synthesis of Z-Aminopyrrole and Simple 1-Substituted-2- Aminopyrroles. Observation of Fast Proton Exchange at C-5. ... Michael De Rosa*, Roy P ISX and Gregory Houghton ... Department of Chemtsuy, The Pcnnsylvama State Umvers~~y Delaware County Campus 15 Yearslcy Mill Road, Media, PA 19063. USA.