Efficient and Green Microwave-Assisted Multicomponent Biginelli Reaction for the Synthesis of Dihydropyrimidinones Catalyzed by Heteropolyanion-Based Ionic Liquids Under Solvent-Free Conditions
Abstract An efficient and green route for the synthesis of dihydropyrimidinones via microwave-assisted Biginellireactioncatalyzed by 3 mol% of heteropolyanion-based ionic liquids undersolvent-freeconditions has been reported. The practical reaction was found to be compatible with different structurally diverse substrates. Good to excellent yields, short reaction times, and operational simplicity
using HCl as a catalyst according to the Biginelli reaction. The structures of the compounds were confirmed by elemental and spectroscopic analysis. ‐ The compounds were evaluated for their calciumantagonisticactivity on the basis of their potency in inhibiting [3H] PN 200—110 binding on microsomes obtained from rat skeletal muscle.
Heteropoly acid supported on activated natural clay-catalyzed synthesis of 3,4-dihydropyrimidinones/thiones through Biginelli reaction under solvent-free conditions
作者:Karuppaiah Selvakumar、Thangamariyappan Shanmugaprabha、Murugan Kumaresan、Ponnusamy Sami
DOI:10.1080/00397911.2017.1396614
日期:2018.1.17
ABSTRACT Dihydropyrimidinones/thiones (DHPM’s) have been prepared by one-pot condensation of methyl acetoacetate, aldehydes, urea/thiourea in the presence of heteropoly-11-tungsto-1-vanadophosphoric acid, H4[PVW11O40] · 32H2O, (HPV) supported on activated natural clay (HPVAC) under solvent-free reaction condition have been proposed. The DHPM derivatives were identified through elemental analysis and
Vegetable oil as a highly effective 100% bio-based alternative solvent for the one-pot multicomponent Biginelli reaction
作者:Pakin Noppawan、Suwiwat Sangon、Nontipa Supanchaiyamat、Andrew J. Hunt
DOI:10.1039/d1gc00872b
日期:——
Multicomponent one-pot Biginellireactions have been successfully performed using vegetable oil as bio-based, non-toxic, and environmentally friendly solvents. Palm oil was demonstrated to be a highly effective greener solvent as compared to petroleum-based solvents such as cyclohexane, with comparable yields for the Biginellireaction of urea, benzaldehyde, and methyl 3-oxobutanoate, of 74% and 73%
An efficient, surfactant mediated Biginelli condensation for the one pot synthesis of dihydropyrimidine derivatives
作者:Deboshikha Bhattacharjee、Bekington Myrboh
DOI:10.1016/j.tetlet.2022.154020
日期:2022.8
mediated catalyst for the synthesis of dihydropyrimidinone derivatives by the Biginelli condensation of aldehydes, β-dicarbonyls, and urea/thiourea. The one-potthreecomponentreaction was accomplished in aqueous micellar media affording excellent yield of the products. The reaction being facile and simple is also supplemented with merits like eco-friendly catalyst, aqueous reaction media and non-chromatographic