Synthesis of 4-Hydroxy-1H-pyrrole-2,3-dicarboxylic Acid Derivatives: Unusual
Coupling of Acetylenic Esters and α-Amino Acids in the
Presence of Cyclohexyl Isocyanide or N,N′-Dicyclohexylcarbodiimide
Abdolali Alizadeh*, Reza Hosseinpour, Sadegh Rostamnia Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175,
Tehran 18716, Iran Fax: +98(21)88006544; e-Mail: aalizadeh@modares.ac.ir;