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- W2186707229 abstract "Salen ligands and their corresponding complexes are well known in the field of asymmetric catalysis due to their success in stereoselective reactions. A method that easily allows for recycling of the catalyst without degradation of catalytic activity would make them more industrially viable. The generation of a Task Specific Ionic Liquid (TSIL) by attaching tributylphosphonium moieties to Jacobsen’s ligand could promote the entrainment of the catalyst in an ionic liquid (IL). This would potentially create a recyclable system where the desired product can be extracted, leaving the IL/catalyst layer behind ready for reuse. The racemic and asymmetric versions of the ligand, 5,5'(1E,1'E)-(cyclohexane-1,2-diylbis(azan-1-yl-1-ylidene))bis(methan-1-yl-1-ylidene)bis(3tert-butyl-4-hydroxy-5,1-phenylene)bis(methylene)bis(tributylphosphonium) hexafluoridophosphate, as well as their respective copper complexes were successfully synthesized and characterized. These were applied to aziridinations of styrene, using tosyliminophenyliodinane (PhINTs) as a nitrene source, in both acetonitrile and three different ILs. Acetonitrile generated yields of up to 88%, however no product was extracted from 1-butyl-3-methylimidazolium hexafluoridophosphate, tetradecyl(trihexyl) phosphonium hexafluoridophosphate and chloride." @default.
- W2186707229 created "2016-06-24" @default.
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- W2186707229 date "2013-01-01" @default.
- W2186707229 modified "2023-09-27" @default.
- W2186707229 title "Phosphonium Ionic Liquid Based Salen Ligands for Use in Catalysis" @default.
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