Abstract
Highly substituted pyrroles 3a,f were prepared conveniently in a reaction of (dimethyl- and diethyl-)acethylenedicarboxylates 1a–b with N-(methyl- and aryl-) hydroxylamines 2a–d in the presence of NaHCO3 using both conventional heating and microwave irradiation. Excelent yields of the very pure products were isolated under solvent-free conditions both at classical as well as microwave heating.
ACKNOWLEDGMENT
The partial financial assistance from the Research Vice Chancellor of Azerbaijan University of Tarbiat Moallem is gratefully acknowledged.
Notes
a Isolated yields after column chromatography.
a Isolated yields after column chromatography.