Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Robert Brauchli"'
Publikováno v:
Magnetic Resonance in Chemistry. 53:304-308
Isomeric mixtures from synthetic or natural origins can pose fundamental challenges for their chromatographic separation and spectroscopic identification. A novel 1D selective NMR experiment, chemical shift selective filter (CSSF)-TOCSY-INEPT, is pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aba48a5498eca41fa208733323d6ca77
https://doi.org/10.1002/mrc.4188
https://doi.org/10.1002/mrc.4188
Publikováno v:
Flavour and Fragrance Journal. 30:91-100
Cat urine from female, male, spayed female or neutered male cats was fermented with an undefined soil microflora broth to create a typical cat urine malodour. This fermented urine was extracted and analysed by a gas chromatograph–mass spectrometer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d627bcf836881540315e6393a020fef
https://doi.org/10.1002/ffj.3216
https://doi.org/10.1002/ffj.3216
Publikováno v:
Chemistry & Biodiversity. 10:2197-2208
5α-Androst-16-en-3α-ol (α-androstenol) is an important contributor to human axilla sweat odor. It is assumed that α-andostenol is excreted from the apocrine glands via a H2 O-soluble conjugate, and this precursor was formally characterized in thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7e21c4ab89f9e943502a198dd5204c7
https://doi.org/10.1002/cbdv.201300286
https://doi.org/10.1002/cbdv.201300286
Publikováno v:
Helvetica Chimica Acta. 96:246-258
Dehydrohedione (DHH) 1 may be obtained in 20% overall yield by a Reformatsky reaction with enone methyl ether 3b, followed by acidic workup of the crude reaction mixture. Alternatively, epoxidation (3-chloroperbenzoic acid, CH2Cl2, 84% yield) of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::270691382f6baa314bf93a4af3bdc4eb
https://doi.org/10.1002/hlca.201200440
https://doi.org/10.1002/hlca.201200440
Publikováno v:
Helvetica Chimica Acta. 94:1216-1225
A preparatively useful one-step transformation of γ,γ-disubstituted α-formyl-γ-lactones into trisubstituted γ,δ-unsaturated aldehydes is described, by means of catalytic amounts of either AcOH or AcOEt in the vapor phase over a glass support. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f22d1f47ef3f29c51da1f1a42a5ed8a
https://doi.org/10.1002/hlca.201000447
https://doi.org/10.1002/hlca.201000447
Autor:
Robert Brauchli, Jean-Yves de Saint Laumer, Hans-Rudolf Hagemann, Wolfgang Fieber, Christian Chapuis
Publikováno v:
Journal of Physical Organic Chemistry. 22:282-288
We have demonstrated experimentally by Raman analysis that 1a exists as a mixture of ttt/cct conformers at 22°C in liquid or CCl4 solution, thus contrasting with the initial IR, NMR and X-ray analyses, which were strongly in favour of (ttt)-1a. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caec5dd7ca7e0a04d1df067185b486f7
https://doi.org/10.1002/poc.1465
https://doi.org/10.1002/poc.1465
Publikováno v:
Journal of Agricultural and Food Chemistry. 53:9244-9248
The reaction of β,β-disubstituted acroleins [3-methyl-2-butenal (1), 3-methyl-2-hexenal (2), and citral (3)] with cysteine gave 1:2 adducts of a novel structural type, namely hexahydro-1,4-thiazepines. To the best of our knowledge, the spontaneous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0f0366cb52d5bf4d7706d1b309a1a25
https://doi.org/10.1021/jf051712h
https://doi.org/10.1021/jf051712h
Publikováno v:
Magnetic resonance in chemistry : MRC. 53(4)
Isomeric mixtures from synthetic or natural origins can pose fundamental challenges for their chromatographic separation and spectroscopic identification. A novel 1D selective NMR experiment, chemical shift selective filter (CSSF)-TOCSY-INEPT, is pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::df78bd17eacbdf8c9d7196b6fd8ecac4
https://pubmed.ncbi.nlm.nih.gov/25616134
https://pubmed.ncbi.nlm.nih.gov/25616134
Publikováno v:
Chemistrybiodiversity. 11(10)
Highly exo-selective [4+2] cycloadditions of cyclopenta-1,3-diene 2a to α,β-dialkyl conjugated enals 5 are compared with the analogous endo-favored Diels-Alder reaction of cyclohexa-1,3-diene 7. The exo-stereoselectivity is lower in the homologous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c573b11211ee772697ef1935b96bb96a
https://pubmed.ncbi.nlm.nih.gov/25329781
https://pubmed.ncbi.nlm.nih.gov/25329781
Publikováno v:
Flavour and Fragrance Journal. 10:147-152
The profile of the total extract of agarwood oil (Aquilaria agallocha Roxb.) is discussed and eight new sesquiterpenoids are presented : two with the eremophilane-skeleton (rel-(2R,8S,8aR)-2-(1,2,3,5,6,7,8,8a-octahydro-8,8a-dimethyl-2-naphthyl)-prop-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0554b9236e09b67f77a4b679dcffa9c8
https://doi.org/10.1002/ffj.2730100306
https://doi.org/10.1002/ffj.2730100306