340-71-6Relevant articles and documents
Polyphosphate ester-mediated synthesis of dihydropyrimidines. Improved conditions for the Biginelli reaction
Kappe, C. Oliver,Falsone, S. Fabio
, p. 718 - 720 (1998)
Dihydropyrimidines 7 are prepared in high yield by a one-pot condensation of aldehydes, acetoacetates, and ureas using a polyphosphate ester-mediated cyclocondensation reaction. Yields are significantly higher than utilizing classical Biginelli reaction c
One-step solvent-free synthesis of fluoroalkyl-substituted 4-hydroxy-2-oxo(thioxo)hexahydropyrimidines in the presence of 1-butyl-3-methylimidazolium tetrafluoroborate
Putilova,Troitskii,Zlotin,Khudina,Burgart,Saloutin,Chupakhin
, p. 1392 - 1395 (2006)
A convenient procedure has been developed for the synthesis of fluoroalkyl-substituted 6-aryl-4-hydroxy-2-oxo-(thioxo)hexahydropyrimidine derivatives by three-component condensation of fluorinated β-dicarbonyl compounds with aromatic aldehydes and urea or
Revisit to the Biginelli reaction: A novel and recyclable bioglycerol-based sulfonic acid functionalized carbon catalyst for one-pot synthesis of substituted 3,4-dihydropyrimidin-2-(1H)-ones
Konkala, Karnakar,Sabbavarapu, Narayana Murthy,Katla, Ramesh,Durga, Nageswar Yadavalli Venkata,Kumar Reddy T, Vijai,Bethala L.a., Prabhavathi Devi,Rachapudi B.n., Prasad
supporting information; experimental part, p. 1968 - 1973 (2012/05/05)
A simple and efficient synthetic protocol has been developed for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones by using a novel bioglycerol-based sulfonic acid functionalized carbon catalyst, devoid of moisture sensitive metal catalysts and corrosive acidic reagents. The developed method has the advantages of good to excellent yields, short reaction times, operational simplicity, and a recyclable catalyst. The catalyst can be prepared by a simple procedure from inexpensive and readily available glycerol and has been shown to be recoverable and reusable up to four cycles without any loss of activity.
Synthesis, characterization and biological evaluation of some dihydropyrimidinones
Vijay,Ganapaty,Rao, A. Srinivas
experimental part, p. 2518 - 2528 (2010/10/21)
An efficient and facile one pot synthesis of 3,4-dihydropyrimidinones (Biginelli compounds) from divergent aldehydes, β-keto esters and urea or thiourea under solvent free conditions was performed using citric acid as catalyst, resulted in promising yield