Document Type: Research Note
Department of Chemistry, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, I.R. IRAN
Department of Chemistry, Tarbiat Modarres University, P.O. Box 14155-4838, Tehran, I.R. IRAN
Department of Chemistry, Islamic Azad University, Science and Research Campus, Tehran, I.R. IRAN
Protonation of the reactive intermediates generated in the raction between dalkyl acetylenedicarboxylates and triphenylphosphine by isonitrosoacetophenone leads to vinyltriphenylphosphonium salts, which undergo intramolecular Wittig reaction to produce dalkyl 4-phenyl-N-hydroxypyrrole-2,3-dicarboxylates in moderate yields.