Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Béla Simándi"'
Autor:
Jorge Augustín Martínez Pérez, Dániel Varga, László Hegedűs, Béla Simándi, Edit Székely, Sandor Miskolczi, György Bánsághi
Publikováno v:
Chemical Engineering & Technology. 37:1885-1890
The chiral resolution of two racemic cyclopropanecarboxylic acids with the resolving agents (S)-2-(N-benzylamino)butan-1-ol and (R)-1-phenylethanamine was investigated. The resolutions were based on diastereomer salt crystallization in supercritical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76dd793cc558aa7286e26c073c65163b
https://doi.org/10.1002/ceat.201300720
https://doi.org/10.1002/ceat.201300720
Publikováno v:
Open Chemistry, Vol 12, Iss 1, Pp 25-32 (2014)
The first enzyme-catalyzed kinetic resolution of tert-butyl-3-hydroxy-4-phenylpyrrolidine-1-carboxylate is presented. Enzyme, solvent and temperature optimization resulted in a new resolution method with E = 40 enantioselectivity. The acetate derivat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::195bf1e6c45f15c563ac765b2aaedc07
https://doi.org/10.2478/s11532-013-0347-8
https://doi.org/10.2478/s11532-013-0347-8
Publikováno v:
The Journal of Supercritical Fluids. 79:127-132
We developed an efficient method for the lipase-catalyzed consecutive kinetic resolution of trans -1,2-cyclohexanediol in scCO 2 with vinyl-acetate as acetyl donor catalyzed by a commercial immobilized Candida antarctica lipase B (CAL-B). The reactio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8262f0fe702a74f5a8392f25ab5a13c
https://doi.org/10.1016/j.supflu.2012.11.016
https://doi.org/10.1016/j.supflu.2012.11.016
Autor:
Melinda Emese Füstös, M. Utczás, Gyöngyi Klupp, Á. Botos, Rudi Hackl, Katalin Kamarás, Bea Botka, Dorina Kocsis, Béla Simándi, Edit Székely
Publikováno v:
physica status solidi (b). 249:2432-2435
1 Walther-Meissner-Institute, Bavarian Academy of Sciences and Humanities, Walther-Meissner-Strasse 8, 85748 Garching, Germany 2 Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, P.O. Box
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ddce3f1b33eeb6e2810fb4afa645e31
https://doi.org/10.1002/pssb.201200349
https://doi.org/10.1002/pssb.201200349
Publikováno v:
The Journal of Supercritical Fluids. 69:113-116
The first in situ diastereomeric salt formation reaction in supercritical carbon dioxide is reported in this paper. The reaction studied was the salt formation between racemic ibuprofen and ( R )-(1)-phenylethylamine, and was combined with supercriti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13b499e5ba019c797e905067afa75bfe
https://doi.org/10.1016/j.supflu.2012.05.016
https://doi.org/10.1016/j.supflu.2012.05.016
Autor:
Sabine Kareth, Katalin Veres, Balázs Blazics, Lenuta Gontaru, Béla Simándi, Szabina Plánder, Ágnes Kéry
Publikováno v:
European Journal of Lipid Science and Technology. 114:772-779
Analysis of different extracts of Satureja hortensis L. obtained with various solvents (by supercritical CO2 and by traditional extraction techniques) is presented in this study to identify and to determine the major constituents responsible for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74599271699e21c6ea7d3e9388e308bc
https://doi.org/10.1002/ejlt.201100273
https://doi.org/10.1002/ejlt.201100273
Autor:
Judit Halász, György Bánsághi, Dániel Varga, Béla Simándi, Edit Székely, György Pokol, János Madarász
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 111:567-574
Two different compounds have formed from liquid enantiomeric (R-) and racemic α-methylbenzylamine (α-MBA, named also as 1-phenylethylamine, 1-FEA) with supercritical fluid CO2. The crystalline solids have been characterized by elemental CHN analysi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d55a9843f4d08e4725c79c1b4bc85af3
https://doi.org/10.1007/s10973-011-2174-5
https://doi.org/10.1007/s10973-011-2174-5
Publikováno v:
The Journal of Supercritical Fluids. 61:55-61
Supercritical carbon dioxide extraction of Alnus glutinosa (L.) Gaertn. was performed ( P = 300/450 bar, T = 40/60 °C, EtOH addition = 0/5/10%) in order to determine preferable process conditions. Phytochemical composition of extracts were analyzed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d05bfdeb3a8e3daf1b1188f32868fde
https://doi.org/10.1016/j.supflu.2011.10.003
https://doi.org/10.1016/j.supflu.2011.10.003
Publikováno v:
Journal of the Science of Food and Agriculture. 91:2875-2881
BACKGROUND: Marigold is a traditional medicine herb which shows good pharmacological activity in many aspects. It is very important to obtain and investigate the specific bioactive compounds from marigold. The objective of the study was to extract th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3a5cde8bcf28ac32db00bcce7bf1f0a
https://doi.org/10.1002/jsfa.4537
https://doi.org/10.1002/jsfa.4537
Publikováno v:
Journal of Food Process Engineering. 35:222-235
The extraction of St. John's wort (Hypericum perforatum L.) was carried out with different solvents to obtain valuable components and natural agents rich extracts. Further aim of this study was to compare the raw materials that were gathered at the b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da26e8fc34585d1349d0d56cf38c4a5a
https://doi.org/10.1111/j.1745-4530.2010.00583.x
https://doi.org/10.1111/j.1745-4530.2010.00583.x