Filtry
Resolution by diastereomeric salts: Access to both enantiomers of racemic acid using the same enantiomer of resolving base
by diastereomeric salt crystallization. Quinidine was used as a sole resolving base. The salt of (+)-acid crystallized from aqueous acetonitrile solution. Once this salt was separated by filtration, quinidine ...
Organic chemistry
- 2023 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
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Enantiodiscrimination in NMR spectra and X-ray structures of diastereomeric salts of trans-4-(4-fluorophenyl)-3-hydroxymethyl-1-methylpiperidine with (S)-Mosher acid
Signal anisochrony delta in NMR spectra of racemic trans-4-(4-fluorophenyl)-3-hydroxymethyl-1-methylpiperidine 1 induced on the formation of diastereomeric salt complexes, stoichiometric ratio and enantiomeric composition. X-ray str...
CC - Organická chemie
- 2002 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Chemistry of 4-fluoroglutamic acid. Part 4. Resolution of the racemic erythro and threo forms through their diastereomeric salts.
Annotation not available...
CC - Organická chemie
- 2000 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Pinene-fused chiral N-ethylpyridinum room temperature molten salts
New chiral room temperature molten salts (ionic liquids) based on the pinene-pyridinium unit associated with triflate or trifluoroacetate anions were prepared. The thermal behavior of these salts was observed by DSC and solventless ...
CC - Organická chemie
- 2005 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Synthesis of Naltrexone and (R)-Methylnaltrexone from Oripavine via Direct Oxidation of Its Quaternary Salts
was prepared from the corresponding R-diastereomer of the oripavine salt. All diastereomeric mixtures of the quaternary salts were subjected to N-demethylation with sodium with cyclopropylmethyl halides, singlet oxygen oxi...
CC - Organická chemie
- 2015 •
- Jx •
- Odkaz
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Search for Conglomerate in Set of [7]Helquat Salts: Multigram Resolution of Helicene-Viologen Hybrid by Preferential Crystallization
Investigation of a set of 12 [7]helquat salts by X-ray crystal diffraction led to identification of conglomerate behavior in bis(trifluoroacetate) salt [2][CF3CO2](2, preparation of nonracemic samples of [7]helquat 2 via diaster...
CC - Organická chemie
- 2013 •
- Jx •
- Odkaz
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Synthesis of diastereomerically pure 1-butylphenylphosfino-1´-oxazolinylferrocenes
Synthesis of pure diastereomeres is described.
CC - Organická chemie
- 2000 •
- A
Rok uplatnění
A - Audiovizuální tvorba
Characterization of Diastereomeric Nickel(II) Complexes Using Off-line Combination of Reversed-phase Liquid Chromatography and Laser Desorption/Ionization Time-of-flight Mass Spectrometry.
Characterization of Diastereomeric Nickel(II) Complexes Using Off-line Combination of Reversed-phase Liquid Chromatography and Laser Desorption/Ionization Time-of-flight Mass Spectrometry....
CA - Anorganická chemie
- 2004 •
- D
Rok uplatnění
D - Stať ve sborníku
Energy-resolved MS/MS study of diastereomeric flavour and fragrant compounds in ion trap conditions
Energy-resolved MS/MS study of diastereomeric flavour and fragrant compounds in ion trap conditions...
CI - Průmyslová chemie a chemické inženýrství
- 2002 •
- D
Rok uplatnění
D - Stať ve sborníku
Axially Chiral Sulfonic Acids for Brønsted Acid Catalysis: 8-Benzoimidazolylnaphthalene-1-sulfonic Acids and Their Derivatives
A new type of axially chiral sulfonic acid was developed. The synthesis is based on cheap commercially available materials and a practical method for optical resolution via diastereomeric salt formation, which can provide both enant...
Organic chemistry
- 2023 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
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