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Abstract
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In the present investigation, a novel bifunctional oxyammonium-based ionic liquid,
namely, 2,20-(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 (1HNMR), carbon nuclear magnetic resonance (13CNMR),
fluorine nuclear magnetic resonance (19FNMR), 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.
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