Free N‐heterocyclic carbenes from Brønsted acidic ionic liquids: Direct detection by electrospray ionization mass spectrometry
Sign Up to like & getrecommendations! Published in 2022 at "Rapid Communications in Mass Spectrometry"
DOI: 10.1002/rcm.9338
Abstract: Rationale The occurrence of N‐heterocyclic carbenes in imidazolium‐based ionic liquids has long been discussed, but no spectroscopic evidence has been reported yet due to their transient nature. The insertion of an ionizable acid group into… read more here.
Keywords: mass spectrometry; nsted acidic; acidic ionic; ionic liquids ... See more keywords
Facile Preparation of β-Cyclodextrin-Fe3O4 Magnetic-Brønsted Acidic Ionic Liquid for Biodiesel Production
Sign Up to like & getrecommendations! Published in 2018 at "Waste and Biomass Valorization"
DOI: 10.1007/s12649-018-0506-4
Abstract: Brønsted acidic ionic liquid supported on magnetic Fe3O4 [β-CD-6-Im-(CH2)3-HSO3][HSO4]-Fe3O4 was synthesized successfully, the catalyst was characterized via TGA, FT-IR, XRD, SEM, BET and acidity determination, and used to catalyze the high-acidic untreated Jatropha carcass L.… read more here.
Keywords: acidic ionic; ionic liquid; biodiesel production; nsted acidic ... See more keywords
Novel, recyclable Brønsted acidic deep eutectic solvent for mild fractionation of hemicelluloses.
Sign Up to like & getrecommendations! Published in 2022 at "Carbohydrate polymers"
DOI: 10.1016/j.carbpol.2021.118992
Abstract: Acidic deep eutectic solvents (DESs) are promising media for lignin valorization and cellulose conversion due to their good ability in efficient deconstruction of plant cell wall. However, hemicellulose extraction from lignocellulose using acidic DESs remains… read more here.
Keywords: dess; nsted acidic; fractionation hemicelluloses; acidic deep ... See more keywords
Modulation of Lewis and Brønsted Acidic Sites to Enhance the Redox Ability of Nb2O5 Photoanodes for Efficient Photoelectrochemical Performance.
Sign Up to like & getrecommendations! Published in 2023 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c23284
Abstract: Accelerated surface redox reaction and regulated carrier separation are the crux to the development of highly reactive oxide semiconductors for efficient photoelectrochemical water splitting. Here, we have selected Nb2O5 materials that combine unique surface acidity… read more here.
Keywords: ability; nsted acidic; surface; efficient photoelectrochemical ... See more keywords
The Implications of the Brønsted Acidic Properties of Crabtree-Type Catalysts in the Asymmetric Hydrogenation of Olefins
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c07023
Abstract: Chiral iridium complexes derived from Crabtree’s catalyst are highly useful in modern hydrogenations of olefins attributed to high reactivity, stereoselectivity, and stability. Despite that these precatalysts are pH neutral, the reaction mixtures turn acidic under… read more here.
Keywords: hydrogenation olefins; acidic properties; implications nsted; hydrogenation ... See more keywords
A strategy for the dissolution and separation of rare earth oxides by novel Brønsted acidic deep eutectic solvents
Sign Up to like & getrecommendations! Published in 2019 at "Green Chemistry"
DOI: 10.1039/c9gc00944b
Abstract: The dissolution and separation of rare earth oxides were realized by novel Brønsted acidic deep eutectic solvents. read more here.
Keywords: nsted acidic; dissolution separation; novel nsted; separation rare ... See more keywords
Protic ionic liquids from di- or triamines: even cheaper Brønsted acidic catalysts
Sign Up to like & getrecommendations! Published in 2021 at "Green Chemistry"
DOI: 10.1039/d1gc00515d
Abstract: Dicationic and tricationic ionic liquids, synthesised by proton transfer from sulfuric acid and corresponding di- and triamines, were characterised and used as Brønsted acidic catalysts in biodiesel production. read more here.
Keywords: protic ionic; nsted acidic; acidic catalysts; triamines even ... See more keywords
Green synthesis of coumarin derivatives using Brønsted acidic pyridinium based ionic liquid [MBSPy][HSO4] to control an opportunistic human and a devastating plant pathogenic fungus Macrophomina phaseolina
Sign Up to like & getrecommendations! Published in 2022 at "RSC Advances"
DOI: 10.1039/d2ra03774b
Abstract: An eco-friendly simple protocol has been devised for the preparation of coumarin derivatives using doubly Brønsted acidic task specific ionic liquid (TSIL) as a catalyst. Solvent-free conditions were employed for the reaction of different substituted… read more here.
Keywords: nsted acidic; ionic liquid; coumarin derivatives; plant ... See more keywords
A solvent and transition metal-free, highly efficient Brønsted acidic ionic liquid promoted one-potthree-component reactions for the synthesis of tetrasubstituted pyrroles
Sign Up to like & getrecommendations! Published in 2019 at "Synthetic Communications"
DOI: 10.1080/00397911.2019.1593460
Abstract: Abstract The present protocol describes a highly efficient, transition metal and solvent-free one-pot annulation of amines, dialkyl acetylenedicarboxylates and β-nitrostyrene using imidazolium Brønsted acidic ionic liquid for the synthesis of tetrasubstituted pyrroles. A diverse functionalized… read more here.
Keywords: ionic liquid; nsted acidic; transition metal; tetrasubstituted pyrroles ... See more keywords