N1,N1,N2,N2-Tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride as a highly efficient catalyst for synthesis of some nitrogen- and oxygen-containing heterocyclic compounds
Publish place: Iranian Chemical Communication، Vol: 7، Issue: 3
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ICC-7-3_003
تاریخ نمایه سازی: 23 تیر 1398
Abstract:
In this research, a Brønsted acidic ionic liquid namely N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride {[TMBSED][Cl]2} was employed as a highly efficient catalyst for the solvent-free production of some nitrogen- and oxygen-containing heterocyclic compounds including: (i) polyhydroquinolines (from arylaldehydes, dimedone, β-ketoesters and ammonium acetate), (ii) 3,4-dihydropyrimidin-2-(1H)-ones/thiones (from arylaldehydes, β-ketoesters and urea/thiourea), and (iii) 14-aryl-14H-dibenzo[a,j]xanthenes (from aromatic aldehydes and β-naphthol). In all cases, the heterocycles were obtained in high yields and in short reaction times. The salient features of using [TMBSED][Cl]2 in the reactions, include effectiveness, generality, simple preparation of the catalyst from inexpensive and easy available reactants, achieving the reactions under solvent-free conditions, synthesis of the products with high yields in short reaction times and need to milder conditions compared with many reported methods for the preparation of the aforesaid organic compounds.
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Authors
Maryam Dashtizadeh
Department of Chemistry, Payame Noor University, P.O. Box ۱۹۳۹۵-۴۶۹۷ Tehran, Iran
Maryam Khalili
Department of Chemistry, Payame Noor University, P.O. Box ۱۹۳۹۵-۴۶۹۷ Tehran, Iran
Fatemeh Reghbat
Department of Chemistry, Payame Noor University, P.O. Box ۱۹۳۹۵-۴۶۹۷ Tehran, Iran
Eshagh Abdi
Department of Chemistry, Payame Noor University, P.O. Box ۱۹۳۹۵-۴۶۹۷ Tehran, Iran
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