14967-24-9Relevant articles and documents
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.
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.
