期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 336, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2021.116329
关键词
Ionic liquids; Supramolecular polymeric aggregation; Tetrahydrobenzo[b]pyran; Benzoates; Catalytic activity
资金
- Deanship of Scientific Research, King Saud University
- Research Centre, King Saud University
- College of Pharmacy, King Saud University
Naturally occurring benzoic acid derived anions have been used to prepare halogen-free hydrophilic ionic liquids, which were further studied for their supramolecular polymeric aggregation behavior. Among them, IL-1 showed highly efficient catalytic performance, yielding 86.9% product in 30 minutes.
Naturally occurring benzoic acid (BA) derived anions have been used to prepare halogen free hydrophilic ionic liquids (ILs 1-4). The supramolecular polymeric aggregation behaviour of these ILs has been studied through high-resolution electron spray ionization mass spectrometry (HR-ESI-MS). Furthermore, these ILs were applied as catalyst/phase transfer catalyst in the synthesis of tetrahydrobenzo[b]pyran and its derivatives. These reactions were conducted in aqueous medium under ultrasound assistance. The results suggested that 1-ethyl-3-methylimidazolium 2-hydroxybenzoate (IL-1) was a highly efficient catalyst yielding 86.9% product in 30 min. In addition, the impact of aggregation behaviour of ILs on their catalytic activity was also investigated. (C) 2021 Elsevier B.V. All rights reserved.
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