2052-49-5Relevant articles and documents
Cluett
, p. 610 (1959)
Hydrates of Organic Compounds. X. The Formation of Clathrate Hydrates of Tetrabutylammonium Alkanesulfonates
Nakayama, Haruo,Usui, Hideyuki
, p. 833 - 838 (1986)
The solid-liquid phase diagrams of binary mixtures of water with tetrabutylammonium alkanesulfonate (n-C4H9)4NO3SR(R=CH3-C5H11) and with tetrabutylammonium benzenesulfonate were examined in order to confirm the formation of clathrate-like hydrates.It has been found that (1) all the sulfonates examined can form clathrate-like hydrates with hydration numbers either around 30 or around 39; (2) these hydrates can be classified into three groups I, II, and III on the basis of the hydration numbers and melting points just as in the case of a series of tetrabutylammonium carboxylate hydrates; and (3) generally, the melting points of these sulfonate hydrates are lower than those of tetrabutylammonium carboxylate hydrates.The formation of clathrate-like hydrates of tetrabutylammonium hydrogensulfite and of tetrabutylammoniumsulfite has also been reported and is discussed in an appendix.
Preparation and application of highly efficient and reusable TBAPIL@Si(CH2)3@nano-silica-based nano-catalyst for preparation of benzoxanthene derivatives
Agrwal, Akansha,Kumar, Vipin,Kasana, Virendra
, p. 2583 - 2595 (2021/02/26)
Tetrabutylammonium prolinate ionic liquid (TBAPIL) was prepared, and mesoporous silica nanoparticles (NPs) were synthesized. Both of these were linked through propyltriethoxysilane to prepare a reusable catalyst TBAPIL@Si(CH2)3@silica NPs (TBAPILS). The formation of TBAPIL was checked through Fourier-transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR) analysis. X-ray diffraction analysis confirmed the structure of silica NPs and linking of TBPAIL on it. Transmission electron microscopy proved the flourishing development of silica NPs. Scanning electron microscopy graphs exposed the altering in morphology of silica NPs and TBAPILS. FT-IR analysis also confirmed the formation of TBAPILS catalyst. Moreover, the effectiveness of the TBAPILS was also checked for the synthesis of various derivatives of tetrahydrobenzoxanthenes-11-ones. The formation and structure of obtained compounds were confirmed by FT-IR, elemental analysis, 1HNMR and 13C NMR spectral analysis. The catalyst TBAPILS was found to be used successfully up to five cycles without significant loss of activity.
Preparation of Acifluorfen-Based Ionic Liquids with Fluorescent Properties for Enhancing Biological Activities and Reducing the Risk to the Aquatic Environment
Cao, Yongsong,Li, Jianqiang,Niu, Junfan,Tang, Gang,Tang, Jingyue,Tang, Rong,Yang, Jiale,Zhang, Wenbing,Zhou, Zhiyuan
, p. 6048 - 6057 (2020/06/26)
In this work, 12 novel herbicidal ionic liquids (HILs) based on acifluorfen were prepared by pairing with the fluorescent hydrazides or different alkyl chains for increasing activities and reducing negative impacts on the aquatic environment. The results showed that the fluorescence of coumarin hydrazide in the HILs was applied as the internal and supplementary light source to meet the requirement of light wavelength range of acifluorfen, which improved the phytotoxicity of acifluorfen to weeds by enhancing singlet oxygen generation with increased sunlight utilization. The herbicidal activities of HILs were related positively with the length of chain of cation under high light intensity and depended mainly on the fluorescence characteristic of the cation under low light intensity, and the double salt IL forms of acifluorfen containing coumarin hydrazide and n-hexadecyltrimethylammonium had enhanced efficacies against broadleaf weeds in the field. Compared with acifluorfen sodium, HILs had lower water solubility, better surface activity, weaker mobility in soils, and higher decomposition temperature. These results demonstrated that HILs containing different cations provided a wider scope for fine-tuning of the physicochemical and biological properties of herbicides and established a promising way for the development of environmentally friendly herbicidal formulations.
