- One-pot water-free ionic liquids synthesis using trialkyl orthoesters
-
The present invention relates to a manufacturing method of an ionic liquid, including a step of manufacturing an amine based compound or a heterocyclic compound including alkylated nitrogen made by making a negative ion salt compound and trialkyl ortho esters react with at least one among heterocyclic compounds with nitrogen and amine based compounds.COPYRIGHT KIPO 2015
- -
-
Paragraph 0049-0052
(2016/10/10)
-
- A general and direct synthesis of imidazolium ionic liquids using orthoesters
-
A general method to synthesize halide and halide-free ionic liquids was developed. Direct alkylation of imidazole and pyridine derivatives was performed in the presence of an acid using an orthoester as the alkyl donor yielding ionic liquid products. Residual Cl and water contents of the ionic liquids were determined by ion chromatography and a Karl-Fisher test. the Partner Organisations 2014.
- Kim, Do Joong,Oh, Kyung Hwan,Park, Jin Kyoon
-
supporting information
p. 4098 - 4101
(2014/11/07)
-
- Application of three-legged piano-stool cyclopentadienyl-N-heterocyclic carbene iron(II) complexes as in situ catalysts for the transfer hydrogenation of ketones
-
A one pot system has been developed based on nine related 1,3-dialkylated imidazolium salts for the in situ generation of N-heterocyclic carbene iron(II) complexes in which the complexes were directly tested as catalysts for the transfer hydrogenation of ketones. This is a simplified reproducible process that aims to eliminate unnecessary purification steps for the isolation of such catalysts prior to application. Complexes 10-12 have been prepared under similar conditions, isolated and structurally characterized by spectroscopic and crystallographic methods. Solid state structures of the three complexes were similar and showed distorted octahedral three-legged piano stool geometry around each iron center similar to reported complexes bearing related ligands. As a basis for comparison with the in situ catalyzed systems, the isolated complexes were also tested as catalysts for the transfer hydrogenation of ketones. As a result, under optimized reaction conditions, all the in situ generated catalysts were found to provide excellent activities similar to those based on the isolated complexes with moderate to excellent conversions to the desired alcohol products. Turn over numbers up to 200 at a conversion of 100% was recorded for a wide range of aliphatic, aromatic and cyclic ketones.
- Bala, Muhammad D.,Ikhile, Monisola I.
-
-
- Method for producing haloalkanes from alcohols
-
The invention relates to a process for preparing haloalkanes by reaction of alcohol with hydrogen halide, wherein the reaction of the alcohol with the hydrogen halide occurs in the presence of an ionic liquid at a temperature which is above 100° C. for at least part of the time and, at least at the time of the commencement of the reaction, the water content is not more than 25 mol % based on the amount of liquid, where the ionic liquid is not octyltrimethylammonium chloride.
- -
-
-
- Modelling catalytic turnover frequencies in ionic liquids: The determination of the bimolecular rate constant for solvent displacement from [(C6H6)Cr(CO)2Solv] in 1-w-butyl-3- methylimidazolium hexafluorophosphate
-
The bimolecular rate constant for solvent displacement, k2, from [(C6H6)Cr(CO)2Solv] by an incoming ligand has been determined in the room temperature ionic liquid, [bmim][PF 6], and is compared to that for the same process in cyclohexane and dichloroethane.
- Swiderski, Konrad,McLean, Andrew,Gordon, Charles M.,Vaughan
-
p. 590 - 591
(2007/10/03)
-
- Alkylation process
-
This invention relates to a process for the alkylation of aromatics by reacting an aromatic hydrocarbon with an olefin in the presence of an ionic liquid comprising (a) a compound of the formula Rn MX3-n wherein R is a C1-C6 alkyl radical, M is aluminium or gallium, X is a halogen atom and n is 0, 1 or 2 and, (b) a hydrocarbyl substituted imidazolium halide or a hydrocarbyl substituted pyridinium halide wherein at least one of the said hydrocarbyl substituents in the imidazolium halide is an alkyl group having 1-18 carbon atoms. The process allows ready separation of reaction products from the ionic liquid and improves selectivity to alkylated products.
- -
-
-
