14967-24-9Relevant academic research and scientific papers
Preparation method and application of diallyl ionic liquid
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Paragraph 0020, (2020/02/14)
The invention discloses a diallyl ionic liquid A. A structural formula of the ionic liquid A is shown in the specification, wherein X is Cl, BF4 or NO3, and a preparation method of the ionic liquid A includes the following steps: S1, performing protonation on 2-ethylimidazole by using allyl chloride under the action of a catalyst and a solvent to obtain 1-allyl-2-ethylimidazole; S2, performing quaternization on the 1-allyl-2-ethylimidazole by using allyl chloride, and performing purification to obtain a 1,3-diallyl-2-ethylimidazole ionic liquid; and S3, dissolving an inorganic saltcontaining a target anion in an organic solvent, performing an anion exchange reaction with the 1,3-diallyl-2-ethylimidazole ionic liquid, and performing purification to obtain the product A. An application of the ionic liquid A is characterized in that a C-H bond electrooxidation reaction is performed by using hydroxylamine hydrochloride as a nitrogen source, the ionic liquid A as an electrolyte, Pt/Pb as an electrode, a DMF aqueous solution as a solvent, and an organic compound as a substrate. The ionic liquid A has high electrical conductivity, high solubility to organic matter and a highreaction yield, and has less harm to operators and the environment when used in the C-H bond electrooxidation reaction.
A 2 - ethyl imidazole ionic liquid preparation method and application thereof
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Paragraph 0044, (2017/08/25)
The invention discloses a preparation method of a 2-ethylimidazole ionic liquid. The method comprises the following steps: S1, synthesizing 1-propenyl-2-ethylimidazole by using 2-ethylimidazole and propenyl chloride as raw materials; S2, synthesizing a halogenated 2-ethylimidazole ionic liquid by using 1-propenyl-2-ethylimidazole and alkyl halide as raw materials; and S3, carrying out ion exchange on the halogenated 2-ethylimidazole ionic liquid and an inorganic salt solution to obtain the 2-ethylimidazole ionic liquid. The preparation method of the 2-ethylimidazole ionic liquid disclosed by the invention solves the problem that the exiting preparation method is long in synthetic time and the conductivity and electrochemical regulation are limited, can be used as a good ionic electrolyte and can be applied to preparing a high performance ionic liquid-based compound solid electrolyte of an electrochemical container.
Palladium-Catalyzed Dehydrative Cross-Coupling of Allylic Alcohols and N-Heterocycles Promoted by a Bicyclic Bridgehead Phosphoramidite Ligand and an Acid Additive
Kang, Kyungjun,Kim, Jaewook,Lee, Ansoo,Kim, Woo Youn,Kim, Hyunwoo
supporting information, p. 616 - 619 (2016/02/18)
A mild and efficient dehydrative cross-coupling reaction between allylic alcohols and N-heterocycles using palladium catalysis is reported. A bicyclic bridgehead phosphoramidite (briphos) ligand together with Pd(dba)2 is a highly efficient catalyst, and an acid additive involved in the rate-determining step promotes the catalytic cycle. The coupling reaction of allylic alcohols with N-heterocycles including imidazoles, benzimidazoles, and triazole proceeds under mild reaction conditions with high yields using Pd/briphos and pentafluorophenol.
