Solvent-Controlled Racemic Resolution of C3-Symmetric Trihydroxytribenzotriquinacenes

2020 ◽  
Vol 85 (5) ◽  
pp. 3981-3989 ◽  
Author(s):  
Philippe Wagner ◽  
Frank Rominger ◽  
Thomas Oeser ◽  
Michael Mastalerz
Keyword(s):  
Racemic Resolution

Racemic resolution of N-protected alanine by strychnine and brucine versus donor/acceptor capability

CrystEngComm ◽  
2004 ◽  
Vol 6 (47) ◽  
pp. 276-279 ◽  
Author(s):  
Agata Białońska ◽  
Zbigniew Ciunik
Keyword(s):  
Donor Acceptor ◽  
Racemic Resolution

ChemInform Abstract: Enantiomers of 8-(3-tert-Butylamino-2-hydroxypropoxy)-3,4-dihydro-3- oxo-2H(1,4)benzothiazine: Racemic Resolution, Chiral Synthesis and Biological Activity.

ChemInform ◽  
2010 ◽  
Vol 22 (30) ◽  
pp. no-no
Author(s):  
F. SCHIAFFELLA ◽  
R. FRINGUELLI ◽  
V. CECCHETTI ◽  
A. FRAVOLINI ◽  
P. ANGELI ◽  
...  
Keyword(s):  
Biological Activity ◽  
Chiral Synthesis ◽  
Racemic Resolution

Enzymatic Racemic Resolution of a Fluorinated Substrate and Syntheses of E and Z Alkenes as Precursors for Some Biologically Active Fluorohexoses

1997 ◽  
Vol 52 (3) ◽  
pp. 413-418 ◽  
Author(s):  
Muhammad Shaiq Ali ◽  
Tomoya Kitazume ◽  
Viqar Uddin Ahmad
Keyword(s):  
Reaction Time ◽  
Vinyl Acetate ◽  
Nmr Spectra ◽  
Optical Purity ◽  
Biologically Active ◽  
Pure Species ◽  
Optically Pure ◽  
Racemic Resolution ◽  
The Ideal

Abstract A fluorinated substrate 6 was prepared and then the enantiomers (6a and 7a) were separated by an enzyme in presence of an acetylating agent. The optical purity of 6a and 7a were determined by derivatising them into their MTPA -esters and then by taking their 19F NMR spectra. It was observed that, PL 266 (enzyme), benzene (solvent), 24 h (time), 40 °C (temp.) and vinyl acetate (acetylating agent) were the ideal conditions for racemic resolution. The optical purity was further improved by changing the solvent (hexane), amount of enzyme (PL 266; 3000 units), reaction time (12 h) and amount of acetylating agent (vinyl acetate; two molar). The optically pure species was used for the preparation of E and Z alkenes.

Racemic Resolution of some dl-Amino Acids using Aspergillus fumigatus l-Amino Acid Oxidase

2011 ◽  
Vol 63 (1) ◽  
pp. 94-99 ◽  
Author(s):  
Susmita Singh ◽  
Binod K. Gogoi ◽  
Rajib L. Bezbaruah
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Aspergillus Fumigatus ◽  
Acid Oxidase ◽  
Amino Acid Oxidase ◽  
Racemic Resolution

Design of enzyme reactors as chromatographic columns for racemic resolution of amino acid esters

1989 ◽  
Vol 28 (3-4) ◽  
pp. 193-196 ◽  
Author(s):  
J. Kalbé ◽  
H. Höcker ◽  
H. Berndt
Keyword(s):  
Amino Acid ◽  
Amino Acid Esters ◽  
Enzyme Reactors ◽  
Chromatographic Columns ◽  
Acid Esters ◽  
Racemic Resolution

Enzyme-Analogue Built Polymers. XIX. Racemic Resolution on Polymers Containing Chiral Cavities

1986 ◽  
Vol 9 (2-3) ◽  
pp. 385-405 ◽  
Author(s):  
Gunter Wulff ◽  
Heinz-Günter Poll ◽  
Milan Minárik
Keyword(s):  
Racemic Resolution

How To Control Recognition: From Brucinium Double Salts to Racemic Resolution

2019 ◽  
Vol 19 (8) ◽  
pp. 4632-4640
Author(s):  
Emilia Ganczar ◽  
Agata Białońska ◽  
Zbigniew Ciunik
Keyword(s):  
Double Salts ◽  
Racemic Resolution

Hybrid modelling of the racemic resolution of propranolol in membrane contactors

Desalination ◽  
2006 ◽  
Vol 200 (1-3) ◽  
pp. 595-597 ◽  
Author(s):  
Rui M.C. Viegas ◽  
João G. Crespo ◽  
Isabel M. Coelhoso
Keyword(s):  
Hybrid Modelling ◽  
Membrane Contactors ◽  
Racemic Resolution

scholarly journals Spontaneous racemic resolution – towards control of molecular recognition nature

CrystEngComm ◽  
2013 ◽  
Vol 15 (33) ◽  
pp. 6448 ◽  
Author(s):  
Agata Białońska ◽  
Zbigniew Ciunik
Keyword(s):  
Molecular Recognition ◽  
Racemic Resolution
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