The Experts below are selected from a list of 2577 Experts worldwide ranked by ideXlab platform
Shu-li You - One of the best experts on this subject based on the ideXlab platform.
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N‑Heterocyclic Carbene-Catalyzed Enantioselective Intramolecular N‑Tethered Aldehyde–Ketone Benzoin Reactions
2016Co-Authors: Minqiang Jia, Shu-li YouAbstract:The N-heterocyclic carbene-catalyzed enantioselective intramolecular Benzoin reaction of N-tethered substrates was realized. With 15 mol % of d-camphor-derived triazolium salt E and 10 mol % of NaOAc, the aldehyde–ketone cross Benzoin reactions of various substituted N-tethered substrates proceeded smoothly to afford dihydroquinolinone derivatives with a quaternary carbon stereocenter in moderate to good yields and excellent ee
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n heterocyclic carbene catalyzed enantioselective intramolecular n tethered aldehyde ketone Benzoin reactions
ACS Catalysis, 2013Co-Authors: Minqiang Jia, Shu-li YouAbstract:The N-heterocyclic carbene-catalyzed enantioselective intramolecular Benzoin reaction of N-tethered substrates was realized. With 15 mol % of d-camphor-derived triazolium salt E and 10 mol % of NaOAc, the aldehyde–ketone cross Benzoin reactions of various substituted N-tethered substrates proceeded smoothly to afford dihydroquinolinone derivatives with a quaternary carbon stereocenter in moderate to good yields and excellent ee.
Anup A Kadam - One of the best experts on this subject based on the ideXlab platform.
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atom efficient Benzoin condensation in liquid liquid system using quaternary ammonium salts pseudo phase transfer catalysis
Organic Process Research & Development, 2012Co-Authors: Ganapati D Yadav, Anup A KadamAbstract:Benzoin condensation is a reaction of great commercial interest wherein two aromatic aldehydes are condensed to give Benzoin (2-hydroxy-2-phenylacetophenone) product. Theoretically it is 100% atom ...
Minqiang Jia - One of the best experts on this subject based on the ideXlab platform.
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N‑Heterocyclic Carbene-Catalyzed Enantioselective Intramolecular N‑Tethered Aldehyde–Ketone Benzoin Reactions
2016Co-Authors: Minqiang Jia, Shu-li YouAbstract:The N-heterocyclic carbene-catalyzed enantioselective intramolecular Benzoin reaction of N-tethered substrates was realized. With 15 mol % of d-camphor-derived triazolium salt E and 10 mol % of NaOAc, the aldehyde–ketone cross Benzoin reactions of various substituted N-tethered substrates proceeded smoothly to afford dihydroquinolinone derivatives with a quaternary carbon stereocenter in moderate to good yields and excellent ee
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n heterocyclic carbene catalyzed enantioselective intramolecular n tethered aldehyde ketone Benzoin reactions
ACS Catalysis, 2013Co-Authors: Minqiang Jia, Shu-li YouAbstract:The N-heterocyclic carbene-catalyzed enantioselective intramolecular Benzoin reaction of N-tethered substrates was realized. With 15 mol % of d-camphor-derived triazolium salt E and 10 mol % of NaOAc, the aldehyde–ketone cross Benzoin reactions of various substituted N-tethered substrates proceeded smoothly to afford dihydroquinolinone derivatives with a quaternary carbon stereocenter in moderate to good yields and excellent ee.
Ganapati D Yadav - One of the best experts on this subject based on the ideXlab platform.
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atom efficient Benzoin condensation in liquid liquid system using quaternary ammonium salts pseudo phase transfer catalysis
Organic Process Research & Development, 2012Co-Authors: Ganapati D Yadav, Anup A KadamAbstract:Benzoin condensation is a reaction of great commercial interest wherein two aromatic aldehydes are condensed to give Benzoin (2-hydroxy-2-phenylacetophenone) product. Theoretically it is 100% atom ...
A. Inesi - One of the best experts on this subject based on the ideXlab platform.
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Azolium and acetate ions in DMF: Formation of free N-heterocyclic carbene. A voltammetric analysis
Elsevier, 2016Co-Authors: Marta Feroci, I. Chiarotto, Francesca D'anna, Luigi Ornano, Carla Rizzo, A. InesiAbstract:In order to reveal the possible formation of free N-heterocyclic carbene (NHC) in DMF-azolium and acetate solutions, the proton exchange equilibrium between azolium cations and CH3COO− was investigated (by cyclic voltammetry) by adding CH3COOH or tetrabutylammonium acetate to DMF solutions of imidazolium or thiazolium salts of different acidity.The voltammetric analysis confirms that the deprotonation of the azolium cation by CH3COO− (with the formation of free NHC) is significant in the case of the more acidic thiazolium cations, while it is not effective with the less acidic imidazolium ones.Accordingly, the NHC-catalyzed Benzoin condensation was carried out in DMF solutions of azolium salts, tetrabutylammonium acetate, and benzaldehyde. Benzoin was isolated only starting from the more acidic thiazolium salts. Keywords: Cyclic voltammetry, NHC, Azolium salts, Tetrabutylammonium acetate, Acetic acid, Benzoin condensatio
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Benzoin condensation in 1,3-dialkylimidazolium ionic liquids via electrochemical generation of N-heterocyclic carbene
'Elsevier BV', 2009Co-Authors: Sotgiu G, I. Chiarotto, M.n. Elinson, M. Orsini, A. InesiAbstract:N-heterocyclic carbenes generated by electrochemical reduction under galvanostatic control of 1,3-dialkylimidazolium-based ionic liquids were employed as organocatalysts in the Benzoin condensation reaction. Benzoin was isolated in a good yield (84%) by a catalytic amount Of carbene (20%). The use of toxic, volatile molecular solvents as well as any addition of bases has been avoided
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Benzoin condensation in 1,3-dialkylimidazolium ionic liquids via electrochemical generation of N-heterocyclic carbene
Elsevier, 2009Co-Authors: M. Orsini, I. Chiarotto, M.n. Elinson, Giovanni Sotgiu, A. InesiAbstract:N-heterocyclic carbenes generated by electrochemical reduction under galvanostatic control of 1,3-dialkylimidazolium-based ionic liquids were employed as organocatalysts in the Benzoin condensation reaction. Benzoin was isolated in a good yield (84%) by a catalytic amount of carbene (20%). The use of toxic, volatile molecular solvents as well as any addition of bases has been avoided. Keywords: Ionic liquid, N-heterocyclic carbene, Electrosynthesis, Benzoin condensatio