Vitamin B12: An efficient type catalyst for the one-pot synthesis of 3,4,5-trisubstituted furan-2(5 H )-ones and N -aryl-3-aminodihydropyrrol-2-one-4-carboxylates
Abstract VitaminB12 was applied as catalyst for the one-pot three-component synthesis of 3,4,5-trisubstituted furan-2(5H)-ones from the condensation between aldehydes, amines and dialkylacetylendicarboxylates at ambient temperature in EtOH. In addition, N-aryl-3-aminodihydropyrrol-2-one-4-carboxylates were synthesised using mentioned catalyst at ambient temperature in EtOH from condensation between
Green and facile synthesis of dihydropyrrol-2-ones and highly substituted piperidines using ethylenediammonium diformate (EDDF) as a reusable catalyst
作者:Mahboobeh Zarei、Seyed Sajad Sajadikhah
DOI:10.1007/s11164-016-2512-0
日期:2016.9
Abstract Extremely facile and efficient procedures have been developed for the synthesis of dihydropyrrol-2-ones and highly substituted piperidines. One-pot four-component reaction of amines, dialkyl acetylenedicarboxylates, and formaldehyde in the presence of ethylenediammonium diformate in ethanol under reflux conditions provides N-aryl-3-amino dihydropyrrol-2-one-4-carboxylates in good to high yields
Coupling of amines, dialkyl acetylenedicarboxylates and formaldehyde promoted by [n-Bu4N][HSO4]: an efficient synthesis of highly functionalized dihydro-2-oxopyrroles and bis-dihydro-2-oxopyrroles
作者:Seyed Sajad Sajadikhah、Nourallah Hazeri
DOI:10.1007/s11164-012-0998-7
日期:2014.2
Abstract Tetrabutylammonium hydrogensulfate [ n -Bu4N][HSO4] is used as an efficientcatalyst for the one-pot, multi-component synthesis of highly substituted dihydro-2-oxopyrroles and bis-dihydro-2-oxopyrroles by means of reaction between amines, dialkyl acetylenedicarboxylates and formaldehyde in methanol at ambient temperature. This homogeneous catalyst procedure includes some important aspects
Abstract An efficient and straightforward procedure has been developed for the synthesis of highly substituted mono- and bis- N -aryl-3-aminodihydropyrrol-2-one-4-carboxylates via a one-pot, four-component domino reaction of amines, dialkyl acetylenedicarboxylates and formaldehyde in the presence of InCl 3 (20 mol%) in MeOH at ambient temperature. The salient advantages of this method are mild reaction
Abstract An efficientsynthesis of polysubstituted dihydropyrrol-2-one derivativesviaone-pot four-component domino reaction of amines, dialkylacetylenedicarboxylates and formaldehyde in the presence of zirconium tetrachloride (ZrCl4) is described. The presented methodology offers several advantages such as simplicity of operation, good to high yields, short reaction times, inexpensive and readily