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Synthesis of a novel bifunctional oxyammonium‐based ionic liquid: Application for the synthesis of pyrano[4,3‐ b ]pyrans and tetrahydrobenzo[ b ]pyrans
Author(s) -
Zarei Azra,
Yarie Meysam,
Zolfigol Mohammad Ali,
Niknam Khodabakhsh
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800468
Subject(s) - ionic liquid , chemistry , thermogravimetry , bifunctional , ionic bonding , proton nmr , nuclear magnetic resonance spectroscopy , carbon 13 nmr , analytical chemistry (journal) , nuclear magnetic resonance , nuclear chemistry , catalysis , inorganic chemistry , organic chemistry , ion , physics
In the present investigation, a novel bifunctional oxyammonium‐based ionic liquid, namely, 2,2′‐(ethane‐1,2‐diylbis[oxy])bis(ethan‐1‐aminium)‐2,2,2‐trifluoroacetate, was designed and synthesized. The structure of the titled ionic liquid was characterized using Fourier‐transform infrared spectroscopy (FT‐IR), proton nuclear magnetic resonance ( 1 HNMR), carbon nuclear magnetic resonance ( 13 CNMR), fluorine nuclear magnetic resonance ( 19 FNMR), homonuclear COSY nuclear magnetic resonance (NMR), thermogravimetry (TG), derivative thermogravimetry (DTG) analysis, X‐ray diffraction patterns (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The described ionic liquid demonstrated robust catalytic performance in the synthesis of pyrano[4,3‐b]pyrans and tetrahydrobenzo[b]pyran derivatives. The ionic liquid presents a high potential of recycling and reusing capability in both types of model reactions.