A New Synthesis of 5-Arylthieno[2,3-<i>b</i>]pyrroles and 5-Arylthieno [3,2-<i>b</i>]pyrroles
作者:K. SRINIVASAN、K. G. SRINIVASAN、K. K. BALASUBRAMANIAN、S. SWAMINATHAN
DOI:10.1055/s-1973-22207
日期:——
Palladium-Catalyzed Intramolecular Cyclization of Nitroalkenes: Synthesis of Thienopyrroles
作者:Mohamed A. El-Atawy、Francesco Ferretti、Fabio Ragaini
DOI:10.1002/ejoc.201700165
日期:2017.4.10
intramolecular amination of thiophene rings following the reduction of a nitroalkene moiety directly attached to the S-heterocyclic ring. Optimization of the ligand and reaction conditions allowed the synthesis of a series of thienopyrroles aryl/alkyl-substituted at either the 2- or 3-position of the pyrrole ring. By using low pressures of carbon monoxide (5 bars), high yields of fused bicyclic compounds have been