91875-48-8Relevant articles and documents
Facile one-pot multicomponent synthesis of β-acetamido ketones with Amberlyst-15 as heterogeneous catalyst
Das, Biswanath,Reddy, Kongara Ravinder
, p. 3109 - 3111 (2006)
The one-pot multicomponent coupling of an aromatic aldehyde, an enolizable ketone or keto ester, acetonitrile, and acetyl chloride at room temperature in the presence of Amberlyst-15 as catalyst affords β-acetamido ketones in high yields. The inexpensive catalyst works under heterogeneous conditions and can be readily reused.
A SiCl4-ZnCl2 induced general, mild and efficient one-pot, three-component synthesis of β-amido ketone libraries
Salama, Tarek A.,Elmorsy, Saad S.,Khalil, Abdel-Galel M.,Ismail, Mohamed A.
, p. 6199 - 6203 (2007)
A general, mild and efficient protocol for the synthesis of β-amido ketone libraries was achieved utilizing tetrachlorosilane and zinc chloride in dichloromethane at ambient temperature via a one-pot, three-component condensation of various aldehydes, ket
Heteropoly acids as solid green Bronsted acids for a one-pot synthesis of β-acetamido ketones by Dakin-West reaction
Rafiee, Ezzat,Tork, Fariba,Joshaghani
, p. 1221 - 1226 (2006)
An efficient improved procedure for the synthesis of β-acetamido ketones has been developed by a heteropoly acid (HPA) catalyzed three-component coupling protocol. The present methodology offers several advantages such as excellent yields, simple procedur
One-pot four-component Dakin-West synthesis of β-acetamido ketones catalyzed by a vanadium-substituted heteropolyacid
Tayebee, Reza,Tizabi, Shima
, p. 923 - 932 (2012)
The multicomponent condensation of an aryl aldehyde, acetyl chloride, acetonitrile, and enolizable ketone as one-pot synthesis of β-acetamido ketones in high yields was investigated using commercial, non-corrosive, and environmentally benign Keggin and We
Studying catalytic activity of ternary mixed-metal Keggin H7SiV3W9O40 as a versatile acid catalyst for the synthesis of β-acetamido ketones
Tayebee, Reza,Pejhan, Akbar
, (2019/12/03)
One-pot four-component condensation of an aromatic aldehyde with an enolisable ketone and acetyl chloride is investigated in the presence of H7SiV3W9O40 in acetonitrile. The prepared catalyst was characterized by standard techniques such as XRD, SEM, and FT-IR to verify the Keggin structure of nanocatalyst. Furthermore, findings revealed a very good catalytic activity for the applied vanadium substituted heteropolyacid in this acid catalyzed condensation reaction. A series of Keggin Si and V-substituted heteropolyacids were compared for the synthesis of β-acetamido-β-(4-chlorophenyl)propiophenone, which showed a better catalytic activity for H7SiV3W9O40 and H4SiW12O40 than the lacunary and mixed metal Keggin H4SiW9Mo3O40 and H5SiW9Mo2VO40. In addition, effect of the nitrilating agent was also demonstrated in this catalytic system and findings show less proficiency for PhCN compared to acetonitrile. Moreover, propiophenone as an α-substituted enolisable ketone was reacted with some aromatic aldehydes and the anti isomer is detected as the major diastereomer. Therefore, H7SiV3W9O40 can be introduced as a new effective, inexpensive, and eco-friendly catalyst for the introduced four-component condensation reaction.
Synergic effect of nano-catalyst and continuous flow system: Dakin-West reaction catalyzed by Nafion-H@SPIONs in a microreactor
Narei, Zahra Arabloo,Shafiee, Behnaz,Khosropour, Ahmad R.
, p. 20132 - 20137 (2015/03/18)
The expansion of practical processes for superferromagnetic nanocatalysts is a very attractive subject. In this work, we successfully developed a new and efficient procedure with combination of continuous flow technology with immobilizing of only 0.35 mol
