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N1,N1,N2,N2-Tetramethylethylenediaminium-N1,N2-disulfonic Acid Trifluoroacetate as Highly Effectual and Dual-Functional Catalyst for the Reaction of β-Ketoesters with Aryl Aldehydes and Urea/Thiourea

Publish Year: 1398
Type: Journal paper
Language: English
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JR_CHM-3-4_009

Index date: 12 October 2019

N1,N1,N2,N2-Tetramethylethylenediaminium-N1,N2-disulfonic Acid Trifluoroacetate as Highly Effectual and Dual-Functional Catalyst for the Reaction of β-Ketoesters with Aryl Aldehydes and Urea/Thiourea abstract

In this research, the one-pot multi-component reaction of β-ketoesters with aryl aldehydes and urea/thiourea has been performed using a dual-functional ionic liquid-catalyst namely N1,N1,N2,N2-tetramethylethylenediaminium-N1,N2-disulfonic acid trifluoroacetate ([TMEDSA][TFA]2) in solvent-free conditions. By reason of dual-functionality of the catalyst (possessing acidic and basic sites), and also having two numbers of each site, it was highly effectual and general catalyst, and afforded the products {3,4-dihydropyrimidin-2-(1H)-ones and 3,4-dihydropyrimidin-2-(1H)-thiones} in short times with excellent yields. Moreover, a plausible mechanism based on dual-functionality of the catalyst has been proposed.

N1,N1,N2,N2-Tetramethylethylenediaminium-N1,N2-disulfonic Acid Trifluoroacetate as Highly Effectual and Dual-Functional Catalyst for the Reaction of β-Ketoesters with Aryl Aldehydes and Urea/Thiourea Keywords:

N1,N1,N2,N2-Tetramethylethylenediaminium-N1,N2-disulfonic Acid Trifluoroacetate as Highly Effectual and Dual-Functional Catalyst for the Reaction of β-Ketoesters with Aryl Aldehydes and Urea/Thiourea authors

Mostafa Karami

Department of Chemistry, Payame Noor University, PO Box ۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Bentolhoda Gholami

Department of Chemistry, Payame Noor University, PO Box ۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Tahereh Hekmat-Zadeh

Department of Chemistry, Payame Noor University, PO Box ۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Abdolkarim Zare

Department of Chemistry, Payame Noor University, PO Box ۱۹۳۹۵-۳۶۹۷ Tehran, Iran

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