Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Katalin Balázsik"'
Publikováno v:
Catalysis Communications. 32:81-85
The enantioselective hydrogenation of ketopantolactone (KPL) on Pt–alumina catalyst modified by β-isocinchonine (β-ICN) and O -phenylcinchonidine (PhOCD) in toluene, acetic acid and their mixtures under otherwise identical experimental conditions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ca1964481a61cae43625e99fdb5d911
https://doi.org/10.1016/j.catcom.2012.12.009
https://doi.org/10.1016/j.catcom.2012.12.009
Autor:
Katalin Balázsik, Ottó Berkesi, Gábor Szalontai, György Szőllősi, Ferenc Fülöp, Mihály Bartók
Publikováno v:
Topics in Catalysis. 55:880-888
The preparation and application of heterogeneous chiral catalysts are described. Heterogeneous Pd, Ir and Ru catalysts were tested in the enantioselective hydrogenations of N-heterocyclic compounds, namely 6,7-dimethoxy-3,4-dihydroisoquinoline and 1-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f25941e423407d97b1c87dd3cc42392
https://doi.org/10.1007/s11244-012-9854-7
https://doi.org/10.1007/s11244-012-9854-7
Publikováno v:
Catalysis Communications. 12:1410-1414
Competitive hydrogenations of eight binary mixtures of ethyl pyruvate (EP), methyl benzoylformate (MBF), ketopantolactone (KPL), pyruvic aldehyde dimethyl acetal (PA) and trifluoroacetophenone (TFAP) on platinum/alumina catalysts unmodified (racemic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12c68e9458263b76f69b22290d9f09de
https://doi.org/10.1016/j.catcom.2011.05.028
https://doi.org/10.1016/j.catcom.2011.05.028
Publikováno v:
Applied Catalysis A: General. 362:178-184
The enantioselective hydrogenation of 2,2,2-trifluoroacetophenone (TFAP) was investigated over Pt-cinchonidine (CD) and Pt-cinchona alkaloid derivatives chiral catalysts not yet studied in this reaction, such as Pt-cinchonine (CN), Pt-quinine (QN), P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed096c5f4e203eea3b919b8e4aa14f5d
https://doi.org/10.1016/j.apcata.2009.04.040
https://doi.org/10.1016/j.apcata.2009.04.040
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 305:155-160
The origin of rate enhancement in the enantioselective heterogeneous catalytic hydrogenation of ethyl pyruvate on Pt modified with the parent cinchonas, as compared to the unmodified Pt, was studied in a solvent mixture toluene/AcOH 9/1. Hydrogenatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bd3b0b5702b451ec282f7080745a82b
https://doi.org/10.1016/j.molcata.2009.01.030
https://doi.org/10.1016/j.molcata.2009.01.030
Autor:
Szabolcs Cserényi, Katalin Balázsik, György Szöllősi, Kornél Szőri, Imre Bucsi, Miklós Hollósi, Mihály Bartók, Elemér Vass, Károly Felföldi
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 294:14-19
Hydrogenation of α-ketoesters containing steroid groups at the ester side and at the keto carbonyl function of substrates was investigated the first time on Pt–alumina–cinchona alkaloids chiral catalysts using mild experimental conditions (room
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2585c48be42e479aac847119597bfffa
https://doi.org/10.1016/j.molcata.2008.07.002
https://doi.org/10.1016/j.molcata.2008.07.002
Publikováno v:
Catalysis Letters. 125:401-407
The nonlinear phenomenon (NLP) was studied for the first time in the enantioselective hydrogenation of ethyl pyruvate (EP) and ketopantolactone (KPL) under identical conditions, on Pt catalyst modified by quinine and cinchonine, and for comparison wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc9a989b95e16bef9e2ddee336cc03cb
https://doi.org/10.1007/s10562-008-9576-4
https://doi.org/10.1007/s10562-008-9576-4
Publikováno v:
Catalysis Letters. 124:46-51
Results on nonlinear phenomenon (NLP) in the liquid phase hydrogenation of methyl benzoylformate (MBF) and pyruvaldehyde dimethyl acetal (PA) on chiral Pt-cinchona catalyst are reported for the first time (enantiomeric excess 90–95%). The new data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfbb8444ecb7779d40e3ecd364cf4984
https://doi.org/10.1007/s10562-008-9498-1
https://doi.org/10.1007/s10562-008-9498-1
Autor:
Katalin Balázsik, Mihály Bartók, György Szöllősi, Tamás A. Martinek, Tibor Varga, Ferenc Fülöp
Publikováno v:
Journal of Catalysis. 255:296-303
Experimental evidence (measured by NMR) is given for the correlation between the solution-state concentration of the nucleophilic 1:1 modifier–substrate complex and the ee on enantioselective hydrogenation of ketopantolactone using Pt– β -isocin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dad5385f315a3b523d78ca54cc97a3f7
https://doi.org/10.1016/j.jcat.2008.02.020
https://doi.org/10.1016/j.jcat.2008.02.020
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 285:84-91
The enantioselective hydrogenation of methyl benzoylformate (MBF) and pyruvaldehyde dimethyl acetal (PA) was investigated under mild experimental conditions on Pt-alumina catalyst modified with MeOCD, MeOCN, MeOQN and MeOQD alkaloid derivatives in ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::815016a94324e954420d95546a2301f7
https://doi.org/10.1016/j.molcata.2008.01.019
https://doi.org/10.1016/j.molcata.2008.01.019