Continuous-Flow Asymmetric Hydrogenation of an Enol Ester by using Supercritical Carbon Dioxide: Ionic Liquids versus Supported Ionic Liquids as the Catalyst Matrix

ChemCatChem ◽  
2015 ◽  
Vol 7 (13) ◽  
pp. 1961-1965 ◽  
Author(s):  
Ziyun Zhang ◽  
Giancarlo Franciò ◽  
Walter Leitner
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Supercritical Carbon Dioxide ◽  
Continuous Flow ◽  
Asymmetric Hydrogenation ◽  
Supported Ionic Liquids ◽  
Enol Ester ◽  
Supercritical Carbon

ChemInform Abstract: Biocatalysis in Ionic Liquids: Batchwise and Continuous Flow Processes Using Supercritical Carbon Dioxide as the Mobile Phase.

ChemInform ◽  
2010 ◽  
Vol 33 (33) ◽  
pp. no-no
Author(s):  
Manfred T. Reetz ◽  
Wolfgang Wiesenhoefer ◽  
Giancarlo Francio ◽  
Walter Leitner
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Supercritical Carbon Dioxide ◽  
Continuous Flow ◽  
Mobile Phase ◽  
Flow Processes ◽  
Supercritical Carbon

Preparing supported ionic liquids by continuous supercritical carbon dioxide adsorption method

2019 ◽  
Vol 6 (8) ◽  
pp. 085035 ◽  
Author(s):  
Zhuo-Jian Li ◽  
Meng-Yuan Zhen ◽  
Qin-Qin Xu ◽  
Dan Zhou ◽  
Jian-Zhong Yin
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Supercritical Carbon Dioxide ◽  
Carbon Dioxide Adsorption ◽  
Adsorption Method ◽  
Supported Ionic Liquids ◽  
Supercritical Carbon

Ionic liquids and supercritical carbon dioxide: green and alternative reaction media for chemical processes

2016 ◽  
Vol 32 (6) ◽  
Author(s):  
Ruixia Liu ◽  
Peng Zhang ◽  
Suojiang Zhang ◽  
Ting Yan ◽  
Jiayu Xin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Supercritical Carbon Dioxide ◽  
Chemical Processes ◽  
Reaction Media ◽  
Supercritical Carbon

AbstractIonic liquids (ILs) and supercritical CO

scholarly journals Continuous-flow Heck synthesis of 4-methoxybiphenyl and methyl 4-methoxycinnamate in supercritical carbon dioxide expanded solvent solutions

2013 ◽  
Vol 9 ◽  
pp. 2886-2897 ◽  
Author(s):  
Phei Li Lau ◽  
Ray W K Allen ◽  
Peter Styring
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Methyl Acrylate ◽  
Heck Reaction ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Product Distribution ◽  
Internal Diameter ◽  
Palladium Metal ◽  
Supercritical Carbon

The palladium metal catalysed Heck reaction of 4-iodoanisole with styrene or methyl acrylate has been studied in a continuous plug flow reactor (PFR) using supercritical carbon dioxide (scCO2) as the solvent, with THF and methanol as modifiers. The catalyst was 2% palladium on silica and the base was diisopropylethylamine due to its solubility in the reaction solvent. No phosphine co-catalysts were used so the work-up procedure was simplified and the green credentials of the reaction were enhanced. The reactions were studied as a function of temperature, pressure and flow rate and in the case of the reaction with styrene compared against a standard, stirred autoclave reaction. Conversion was determined and, in the case of the reaction with styrene, the isomeric product distribution was monitored by GC. In the case of the reaction with methyl acrylate the reactor was scaled from a 1.0 mm to 3.9 mm internal diameter and the conversion and turnover frequency determined. The results show that the Heck reaction can be effectively performed in scCO2 under continuous flow conditions with a palladium metal, phosphine-free catalyst, but care must be taken when selecting the reaction temperature in order to ensure the appropriate isomer distribution is achieved. Higher reaction temperatures were found to enhance formation of the branched terminal alkene isomer as opposed to the linear trans-isomer.

ChemInform Abstract: Diaryl Ether Synthesis in Supercritical Carbon Dioxide in Batch and Continuous Flow Modes.

ChemInform ◽  
2009 ◽  
Vol 40 (8) ◽  
Author(s):  
Jin-Kyun Lee ◽  
Matthew J. Fuchter ◽  
Rachel M. Williamson ◽  
Gary A. Leeke ◽  
Edward J. Bush ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Continuous Flow ◽  
Diaryl Ether ◽  
Ether Synthesis ◽  
Supercritical Carbon

Long term continuous chemoenzymatic dynamic kinetic resolution of rac-1-phenylethanol using ionic liquids and supercritical carbon dioxide

2009 ◽  
Vol 11 (4) ◽  
pp. 538 ◽  
Author(s):  
Pedro Lozano ◽  
Teresa De Diego ◽  
Corina Mira ◽  
Kimberley Montague ◽  
Michel Vaultier ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Supercritical Carbon Dioxide ◽  
Kinetic Resolution ◽  
Dynamic Kinetic Resolution ◽  
Supercritical Carbon
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