Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Rudolf Dr Hopp"'
2
Application of the Base-catalyzed Halogen Dance (BCHD) Reaction to the Synthesis of Naturally Occurring Dimethylthienyl Disulfides
Autor: Matthias Güntert, Rudolf Dr Hopp, Heinz-Jürgen Dr. Bertram, Horst Sommer, Peter Werkhoff
Publikováno v: Natural Product Letters. 3:219-226
The first synthesis of the naturally occurring dimethylthienyl disulfides 1,2 and 3 is reported. As the key step a Base Catalyzed Halogen Dance reaction was applied.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9116997c04cd8e25a30220d09a800f70
https://doi.org/10.1080/10575639308043867
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3
Chirospecific analysis in essential oil, fragrance and flavor research
Autor: Stefan Brennecke, Peter Werkhoff, Wilfried Bretschneider, Rudolf Dr Hopp, Horst Surburg, Matthias Güntert
Publikováno v: Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 196:307-328
Knowledge of the difference in character and intensity of organoleptically important enantiomeric flavor and fragrance components has initiated the development of new analytical and preparative methods for the separation of optical isomers. In recent
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::037751eb2741e393610a43f80821fcad
https://doi.org/10.1007/bf01197930
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4
Chirospecific analysis in flavor and essential oil chemistry Part B. Direct enantiomer resolution of frans-?-ionone and trans-?-damascone by inclusion gas chromatography
Autor: Matthias Güntert, Rudolf Dr Hopp, Wilfried Bretschneider, Horst Surburg, Peter Werkhoff
Publikováno v: Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 192:111-115
The direct capillary gas Chromatographic separation oftrans-α-ionone andtrans-α-damascone enantiomers is reported using heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin in polysiloxane as a suitable chiral stationary phase. The method described has bee
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f96d7144a259c249bf3229bc8a81dfd7
https://doi.org/10.1007/bf01202622
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5
Analysis of the chiral aroma compound filbertone by inclusion gas chromatography
Autor: Rudolf Dr Hopp, Volker Schurig, Martin Jung, Peter Werkhoff, Wilfried Bretschneider, Johann Jauch, Dieter Schmalzing
Publikováno v: Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 191:28-31
By inclusion gas chromatography on (2,6-di-O-methyl-3-O-perfluoroacyl)-β-cyclodextrins (perfluoroacyl=trifluoroacetyl or heptafluorobutanoyl), the aroma compound of hazelnuts,E-5-methyl-hept-2-en-4-one, filbertone, was quantitatively separated into
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5e9c76718692a45ae1be367b334be85
https://doi.org/10.1007/bf01202361
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7
Chirospecific analysis in flavor and essential oil chemistry Part A. Filbertone ? the character impact compound of hazel-nuts
Autor: Peter Werkhoff, Wilhelm Silberzahn, Manfred Kopsel, Rudolf Dr Hopp, Matthias Güntert, Roland Dr Emberger
Publikováno v: Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 192:108-110
The enantiomers of (E)-5-methyl-2-hepten-4-one (filbertone) have been directly separated by capillary gas chromatography on fused silica capillaries with heptakis (2,3,6-tri-O-methyl)-β-cyclodextrin as stationary phase. The enantiomeric composition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a25e64dd7f673175513ed0f0203830e
https://doi.org/10.1007/bf01202621
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