bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydrolyse und Alkoholyse von Reaktivfarbstoffen: III. Sorbitolyse von Monochlortriazin‐Farbstoffen. 3. Mitteilung über reaktionsmechanistische Untersuchungen an Reaktivfarbstoffen
Authors: Rys P. , Zollinger Hch. 
Published: December 2004

Abstract
The kinetics of the competitive reactions of three monochlorotriazine reactive dyes with water and with sorbitol have been investigated.
The reactions of the monochlorotriazine dyes with sorbitol anions and hydroxyl ions can be divided as follows: (a) With dyes without a NH‐group between the triazine nucleus and the other part of the molecule, the reaction follows the simple addition‐elimination mechanism (AN2E), in which the addition of the nucleophile is ratelimiting. (b) The reactions of dyes containing a NH‐group can be explained by assuming that more than one of the tautomeric isomers are reactive. With one isomer the addition of the nucleophile is the slowest step; with another the base‐catalysed decomposition of the addition complex is rate‐limiting.
The first acid dissociation constant of sorbitol is evaluated (pKa = 13.14;60°).
Propriétés physico‐chimiques et immunologiques de γG‐globulines couplées à un haptène par diazotation
Authors: Jaton J. C. , Scholer H. J. , Isliker H. 
Published: December 2004

AbstractCe travail traite des modifications physico‐chimiques et immunologiques d'anticorps, résultant de leur copulation avec un sulfonamide (Fanasil) et avec l'acide sulfanilique diazotés. La réaction de couplage permet d'introduire à volonté 1 à 70 restes d'haptène par molécule de γG‐globuline. Bien que la γG‐globuline native avant couplage soit homogène, les azo‐γG‐globulines obtenues par copulation se comportent comme des substances hétérogènes en chromatographie sur DEAE‐cellulose. Les γG‐globulines anti‐Histoplasma capsulatum, couplées au Fanasil conservent leur pouvoir de fixation à l'antigène. Cette propriété suggère la possibilité de concentrer spécifiquement une quantité appréciable de médicament sur le micro‐organisme Histoplasma..
Über die Struktur des Ascorbigens
Authors: Kiss G. , Neukom H. 
Published: December 2004

AbstractBei der Bildung des Ascorbigens aus L‐Ascorbinsäure und 3‐Hydroxymethylindol tritt eine C‐Alkylierung am C‐2 des Ascorbat‐Ions ein, wobei sich 2 diastereomere Ascorbigene bilden.
Über die Kinetik der Reduktion von Kobalt(II)‐oxid mit Wasserstoff
Authors: Kohl Herbert Karl , Marincek Borut 
Published: December 2004

AbstractAn dichten Kobalt(II)‐oxidproben wurde die Sauerstoffabbaugeschwindigkeit bei Wasserstoffpartialdrucken von 70 bis 730 Torr im Gebiet von 350 bis 650°C thermogravimetrisch gemessen. Durch metallographische Untersuchung anreduzierter Proben wurde festgestellt, dass die Metallphase einen feinporigen Metallschwamm bildet. Der mittlere Porenradius wurde aus Oberflächenmessungen von vollständig reduzierten Proben auf der Basis des BET‐Verfahrens bestimmt. Die Reduktionsreaktion ist 1. Ordnung bezüglich des Reduktionsgases. Aus der Temperaturabhängigkeit der Reduktionsgeschwindigkeit ergibt sich eine Aktivierungsenergie von 11,7 ± 0,5 kcal/Mol.
Organische Phosphorverbindungen XXV Darstellung und Eigenschaften von sekundären und tertiären Phosphinsulfiden
Authors: Maier Ludwig 
Published: December 2004

AbstractTwo new processes for the preparation of sec. phosphine sulfides which involve reaction of dialkylamino‐dialkyl or diaryl phosphines with hydrogen sulfide, and of dialkylthionophosphonates, (RO)2P(S)H, with GRIGNARD or organolithium reagents, respectively, are described. The addition of sec. phosphine sulfides to olefins and the condensation of sec. phosphine sulfides with N‐hydroxymethyldialkylamines are reported. The conversion of tert. Phosphine sulfides to the corresponding tert. phosphine oxides is readily achieved with hydrogen peroxyde. The physical properties of several new unsymmetrical tert. phosphine sulfide and oxides are listed.
Fluoreszierende Stoffe aus Roten Waldameisen der Gattung Formica (Ins. Hym.). 4. Mitteilung. Isolierung von Isoalloxazin‐Derivaten aus Ameisenmännchen
Authors: Viscontini M. , Schmidt G. H. 
Published: December 2004

AbstractAus Männchen von Formica polyctena FOERST. wurden mit Hilfe von Chromatographie an Cellulosesäulen eine neue Riboflavinverbindung, ein Riboflavinkomplex, ein als Formicaflavin bezeichnetes tiefgelb fluoreszierendes Isoalloxazinderivat und eine weitere unbekannte, gelbgrün fluoreszierende Substanz isoliert. Die Verbindungen werden durch ihre UV.‐Spektren, Rf‐Werte sowie elektrophoretischen Beweglichkeiten charakterisiert.
Korrelation von IR.‐Absorptiosfrequenzen der Silbersalze von Carbonsäuren mit Substituentenkonstanten
Authors: Pascual C. , Simon W. 
Published: December 2004

AbstractA correlation of TAFT's substituent constants σ* with the asymmetric stretching vibration of the carboxylate group of 24 silver salts of carboxylic acids shows that σ*‐values may be determined with a standard deviation of about 0.1 using IR. absorption data.
Über die Elektronenspinresonanzspektren einiger Cu2+‐Komplexe in wässeriger Lösung
Authors: Wüthrich K. 
Published: December 2004

AbstractThe e.s.r. spectra of aqueous solutions of Cu2+‐complexes with a series of methylpyridines (PYR) have been investigated at liquid nitrogen temperature. The experimental data indicate that the formula CU(PYR) holds for the compounds in the frozen solutions. The marked decrease of the copper hyperfine coupling constant for some of the complexes is explained in terms of a distortion of the square planar structure towards a tetrahedral environment of the Cu2+. An analogous interpretation of the e.s.r. spectra of some copper containing electron‐transfer‐oxidases, e.g. ceruloplasmin and laccase, presents a possible explanation of the experimentally observed connections between the spectra and the enzymatic activity of these compounds.
Massenspektrometrische Untersuchungen an einigen Übergangsmetallcarbonyl‐cyclopentadieniden
Authors: Schumacher Ernst , Taubenest Richard 
Published: December 2004

AbstractPhotographically recorded high‐resolution mass‐spectra of the dimeric cyclopentadienyl metal carbonyls of Fe, Ni and Mo and of the trinuclear (C5H5)3Ni3(CO)2 show distinct ion‐molecule associates and fragments of associates. Several of the carbonyl containing fragment ions exhibit structural dependence to some degree. Due to experimental limitations, ionisation efficiency curves allow only a rough estimation of the appearance‐potentials.
Stapelogenin, vermutliche Struktur. Glykoside und Aglykone, 276. Mitteilung
Authors: Eppenberger U. , Vetter W. , Reichstein T. 
Published: December 2004

AbstractStapelogenin, C21H30O4, shows a double bond and two hydroxyl groups which can be acetylated. On the grounds of UV.‐, IR.‐, and NMR‐spectra as well as mass spectra, the probable structure is that of a 3β, 12β‐dihydroxy‐(18, 20β), (14β, 20α)‐diepoxy‐Δ5‐pregnene (1). The exact position of the hydroxyl group, assumed to be 12β, is particularly unsure, as it could also be situated 11α‐ or 12α‐position.
Über einige neuartige, blutdruckwirksame Verbindungen mit Catecholamin‐ähnlicher Struktur
Authors: Daeniker H. U. 
Published: December 2004

AbstractSynthesis and properties of a number of 1‐(3‐halogeno‐4‐methoxy‐phenyl)‐1‐hydroxy‐2‐amino‐propanes, a group of new hypertensive substances, are described. One racemate has been resolved, and the optically active components have been correlated with a catecholamine of known absolute configuration.
Metall‐Komplexbildung von β‐Hydroxythiophenderivaten III
Authors: Petri S. , Sigel H. , Erlenmeyer H. 
Published: December 2004

AbstractThe acidity constants of 2‐acetyl‐3‐hydroxy‐thiophene (III) and 3‐acetyl‐4‐hydroxy‐thiophene (IV) and the stability constants of their complexes with some bivalent metal ions have been determined. The stability of the chelates is discussed as a function of the respective bond orders of the α–β and β–β′ bonds of the thiophene ring.
Schmelzreaktionen mit Aluminiumchlorid. 2 Mitteilung. Über die Konstitution eines orangen Küpenfarbstoffs aus der Pyridin‐Aluminiumchlorid‐Schmelze von 1‐Aminoantrachinon
Authors: Wick A. K. 
Published: December 2004

AbstractThe structure of an orange vat dye obtained by the fusion of 1‐aminoanthraquinone in anhydrous pyridine‐aluminiumchloride has been investigated. By synthesis this dye is proved to be an “anthrimide”‐carbazole derivative of the recently described 11, 16‐dihydro‐5H‐dibenzo[c, mn]naphtho[2,3‐h]acridine‐5, 11, 16‐trione.
Synthesen in der Isochinolinreihe. Synthese und Charakterisierung von sog. «rac.‐Korpaverin»
Authors: Brossi A. , Teitel S. 
Published: December 2004

AbstractThe synthesis of so‐called rac.‐corpaverine (I) has been achieved. Reaction of the methobromide VI and 4‐methoxybenzylmagnesium chloride gave the S‐benzyloxytrimethoxy‐substituted derivative VII, which was catalytically debenzylated to the corresponding 8‐hydroxy derivative I. The latter has been related by O‐methylation to the known tetramethoxy‐substituted 1,2,3,4‐tetrahydroisoquinoline VIII. Physical‐chemical data for I are in full agreement with the structure. The melting points of the free base and its hydrochloride, however, differ considerably from those recently published by KAMETANI et al. [3] [4] for so‐called corpaverine.
Die Massenspektren von Schizozygin und dessen Derivaten
Authors: Hesse M. , Renner U. 
Published: December 2004

AbstractEs wird der thermisch im Massenspektrometer erfolgende Abbau von Schizozygin‐methosalzen diskutiert. Die massenspektrometrischen Fragmentierungen von Schizozygin, Schizozygin‐methin, N‐Methyl‐tetrahydroschizozygin und N, N‐Dimethyl‐hexahydroschizozygin und von deren Derivaten werden auf Grund ihrer hochaufgelösten Spektren interpretiert.
Nickel‐ und Palladiumkomplexe mit Phosphinothioäthern
Authors: Degischer G. , Schwarzenbach G. 
Published: December 2004

AbstractA new terdentate ligand bis‐(diphenylphosphinoethyl)‐sulfide (PSP) and a new quadridentate ligand 1, 2‐bis‐(diphenylphosphinoethylthio)‐ethane (PSSP) (structures see page 1928) have been synthesized and their NiII‐ and PdII‐complexes have been studied. There is good evidence that the metal has coordination number five in some of these complexes containing halogen (Cl, Br, J).
Fluorénacènes et fluorénaphènes Synthèses dans la série des indéno‐fluorènes X. Exo‐cis‐fluorénaphène
Authors: Chardonnens Louis , Chardonnens Henri 
Published: December 2004

AbstractOn décrit une nouvelle synthèse, réalisée en 9 étapes à partir de la propiophénone avec un rendement global de 8,2%, du dihydro‐5,8‐indéno[2,1‐c]fluorène ou exo‐cis‐fluorénaphène. Dans l'avant‐dernière étape, on obtient la dicétone correspondante ou exo‐cis‐fluorénaphène‐dione.
Dicarbonate und Dicarbamate des DL‐Threits und des Erythrits
Authors: Meyer H. R. 
Published: December 2004

AbstractDL‐Threitol dicarbonate and erythritol dicarbonate were prepared by the reaction of butadiene dioxide (DL and meso) with carbon dioxide. Treated with aqueous ammonia the dicarbonates gave the corresponding dicarbamates.
Stereospezifische Synthese und Isomerisierung der 10‐Chlor‐decahydroisochinoline. Decahydroisochinoline. IV. Teil
Authors: Grob C. A. , Wohl R. A. 
Published: December 2004

AbstractTreatment of cis‐ and trans‐10‐hydroxy‐N‐methyl‐decahydroisoquinoline, (3a) and (10a) respectively, or N‐methyl‐Δ9,10‐octahydroisoquinoline (4 a) with hydrogen chloride in acetic acid affords the thermodynamically more stable trans‐isomer of 10‐chloro‐N‐methyl‐decahydroisoquinoline (1a). On the other hand ring closure of β‐(cyclohexen‐1‐yl)‐ethylamines 11a or 11b with aqueous formaldehyde in the presence of chloride ions leads to the 10‐cis‐chlorides 2a or 2b in a kinetically controlled reactions.
Reaktionen des Hexachlordibenzyls II
Authors: Weis C. D. 
Published: December 2004

Abstract1, 1, 2, 2‐Tetrachloro‐1, 2‐bis‐(4‐chlorophenyl)‐ethane (hexachlorodibenzyl) heated with 4‐chlorobenzoic acid or benzoic acid undergoes pyrolytic cleavage yielding the corresponding benzoylchlorides and trans‐tetrachlorostilbene.
Die Strukturen der mittleren Ringverbindungen. XI. Cyclooctan‐1, 2‐trans‐dicarbonsäure
Authors: Dobler M. , Dunitz J. D. , Mugnoli A. 
Published: December 2004

AbstractCrystals of 1, 2‐trans‐cyclooctane‐dicarboxylic acid are monoclinic, a = 14.76 Å, b = 11.89 Å, c = 12.98 Å, β = 111.25°, space group C/2c with 8 molecules in the unit cell. The structure has been solved by direct methods and refined by full‐matrix least squares analysis of three‐dimensional intensity data. The cyclooctane ring is found to occur in an approximately mirror‐symmetric (‘boat‐chair’) conformation.
Verfeinerung der Kristallstruktur von 1,4‐trans‐Diaminocyclohexan‐dihydrochlorid
Authors: Dunitz J. D. , Strickler P. 
Published: December 2004

AbstractThe previously described structure of 1, 4‐trans‐diaminocyclohexane dihydrochloride has been further refined by full‐matrix least‐squares analysis with an improved weighting scheme.
Die Solvolyse von exo‐ und endo‐3‐Chlor‐bicyclo[3.2.1]octan
Authors: Grob C. A. , Weiss A. 
Published: December 2004

AbstractThe rates of solvolysis of exo and endo 3‐chloro bicyclo[3.2.1]octane 1a and 2a have been measured in 80 vol.% aqueous ethanol. The axial endo chloride reacts 263 times as fast as the equatorial exo epimer. This remarkably large rate difference is ascribed to sterically accelerated ionisation of the axial endo epimer due to the ethano bridge.
Synthese von Trispiro[5.2.2.5.2.2.]heneicosa‐1,4,13,16‐tetraen‐3,15‐dion durch doppelte intramolekulare C‐Alkylierung eines Diphenols
Authors: Atkinson R. S. , Dreiding André S. 
Published: December 2004

AbstractA complex trispiro‐bisdienone has been made available through a relatively simple series of reactions.
Conoflorin
Authors: Dugan J. J. , Hesse M. , Renner U. , Schmid H. 
Published: December 2004

AbstractA new alkaloid, conoflorine, isolated from Conopharyngia longiflora Stapf., has been assigned the stereostructure 1 by physical and chemical methods, including degradation to (+)‐quebrachamine (7). The mass spectra of conoflorine and its derivatives are discussed briefly.
Die Elektronenzustände von Perimeter‐π‐Systemen. II. Das Elektronenspektrum des trans‐15, 16‐Dimethyl‐dihydropyrens
Authors: Blattmann H.‐R. , Boekelheide V. , Heilbronner E. , Weber J.‐P. 
Published: December 2004

AbstractThe electronic spectrum and the polarisation of the transitions have been determined in the region from 15000 to 50000 cm−1 for the 2‐acetamino derivative of trans‐15, 16‐dimethyl‐dihydropyrene, whose spectrum resembles closely that of the parent compound and its di‐ethyl analogue. It is shown that the sequence of states is 1Lb, 1La, 1Bb, 1Ba, in agreement with theoretical predictions which were deduced from a configuration interaction model for the D2h‐π‐perimeter of these systems. The influence of inductive and hyperconjugative effects on the band positions and the band intensities has been discussed.
2(3H)‐Oxazolone durch Photoumlagerung von 3‐Hydroxyisoxazolen. Synthese von Muscazon
Authors: Göth H. , Gagneux A. R. , Eugster C. H. , Schmid H. 
Published: December 2004

Abstract3‐Hydroxyisoxazole, für die ein allgemeines Herstellungsverfahren angegeben wird, lassen sich durch UV.‐Bestrahlung in 2(3H)‐Oxazolone überführen.
Über die Alkaloide von Aspidosperma discolor A. DC.
Authors: Dastoor N. J. , Gorman A. A. , Schmid H. 
Published: December 2004

AbstractFrom the stem bark of Aspidosperma discolor A. DC. (–)‐reserpiline, (–)‐isoreserpiline, (+)‐yohimbine, (–)‐10‐methoxy‐geissoschizol and (–)‐10‐methoxy‐dihydrocorynantheol (major alkaloids) and (–)‐isoreserpiline‐ψ‐indoxyl, AD‐V (–)‐β‐yohimbine, (+)‐haplocidine, (+)‐desmethylaspidospermine and (–)‐demethoxy‐aspidospermine (minor alkaloids) have been isolated.
7α‐Methylöstrogene. Über Steroide, 209. Mitteilung
Authors: Kalvoda J. , Krähenbühl Ch. , Desaulles P. A. , Anner G. 
Published: December 2004

AbstractThe synthesis of the 7α‐methyl homologues of estrone, estradiol, 17α‐methyl‐ and 17α‐ethinyl‐estradiol, and of the respective 3‐methyl ethers is described. Their estrogenic activity is compared with that of the corresponding unmethylated compounds.
Der Einfluss unterschiedlicher Trägheitsmomente auf die Thermodiffusion von H35Cl, D35Cl, H37Cl und D37Cl
Authors: Meier Werner 
Published: December 2004

AbstractThe analysis of measurements of the thermal diffusion factor α in the systems H35Cl/H37Cl, D35Cl/D37Cl and H35Cl/D35Cl shows that α may be approximated by the expression
α = C_m \frac{{m_1 − m_2 }}{{m_1 + m_2 }} + C_\theta \frac{{\theta _1 − \theta _2 }}{{\theta _1 + \theta _2 }}.
Über den Einbau von Trichloräthylen in Inhaltsstoffe des Kaffees bei dessen Decoffeinierung
Authors: Brandenberger H. , Bader H. 
Published: December 2004

AbstractAfter decaffeination of green coffee beans by extraction with [14C]‐trichloroethylene, the beans were radioactive and did not loose their activity during roasting. On the basis of the radioactivity uptake, it is estimated that during commercial decaffeination 0.25 to 1 g of trichloroethylene is incorporated per kg of beans. The nature of the compound or compounds formed on interaction of trichloroethylene with coffee constituents is still unknown, but attention is directed to the possibility of the formation of highly toxic S‐dichlorovinyl derivatives as is the case in the extraction of soya beans with trichloroethylene.
Reaktivität von Koordinationsverbindungen XVII Die Autoxydation von CuI‐Komplexen mit Ammoniak und Imidazol
Authors: Zuberbühler A. 
Published: December 2004

AbstractThe autoxidation of two cuprous complexes, Cu(NH3)2+ and Cu(imidazole)2+, has been studied by following the oxygen consumption with a coated oxygen sensor, and the formation of CuII by means of a stopped flow technique. The reaction was found to be of third order being proportional to the concentrations of CuI, oxygen, and free ligand. pH variation was without effect in the range studied. The rate constants are kIM = 5,5 ·103 12· Mol−2·s−1 for imidazole, and kNH3 = 1,6·104 12· Mol−2· s−1 for NH3 as ligand, resp. An apparent activation energy of less than 2 Kcal/mole has been found for the autoxidation of the cuprous imidazole complex. This can be explained by the assumption of a rapidly playing equilibrium proceeding the rate determining step.
Der Mechanismus der Umwandlung von γ‐ zu α‐Eisensesquioxid [1]
Authors: Feitknecht W. , Mannweiler U. 
Published: December 2004

AbstractThe rate of the isothermal transformation of γ into α Fe2O3 and the increase of the crystallites of α Fe2O3 during the transformation were measured using X‐ray methods.
Eine neuartige Fragmentierung cyclischer α, ß‐ungesättigter Carbonylsysteme; Synthese von Exalton und rac‐Muscon aus Cyclododecanon Vorläufige Mitteilung
Authors: Eschenmoser A. , Felix Dorothee , Ohloff G. 
Published: December 2004

AbstractThe conversion of bicyclo[10.3.0]‐1,12‐epoxy‐13‐pentadecanone into 4‐cyclopenta‐decyne‐1‐one, effected by p‐tolylsulfonylhydrazine under mild conditions and in high yield, provides an example of a new fragmentation reaction.
Synthese und Chiralität des (‐)‐Cannabidiols Vorläufige Mitteilung
Authors: Petrzilka T. , Haefliger W. , Sikemeier C. , Ohloff G. , Eschenmoser A. 
Published: December 2004

AbstractN, N‐Dimethylformamide‐dineopentylacetal mediates the direct formation of (‐)‐cannabidiol from (+)‐trans‐ or (+)‐cis‐p‐menthadiene‐(2,8)‐ol‐(1) and olivetol. This reaction provides a simple synthetic entry into the series of optically active constituents of haschisch and defines at the same time the chirality of these compounds.
Über die rolle der Aminogruppen der Faser für die Sorption von anionischen farbstoffen: Versuche mit Amino‐ und Hydroxypolypropylen 15. Mitteilung über textilchemische Untersuchungen [1]
Authors: Ferrini B. G. , Zollinger H. 
Published: December 2004

Abstract(1) Three anionic mono azo dyes (Orange I, Orange II and Orange 8) and a 1:2 metal complex dye (Cibalan Grey BL) are dyed onto aminopolypropylene. With all the dyes, a Langmuir isotherm with a stoichiometric relation between the dye adsorbed and the concentration of amino groups on the substrate is obtained.
Mécanisme de l'hydrolyse acide des carbamates
Authors: Hudson R. F. , Searle R. J. G. , Mancuso A. 
Published: December 2004

AbstractN, N‐dialkyl carbamates decompose in strongly acidic media to carbon dioxide, olefin, alkyl halide and alcohol, the rate of reaction of the secondary esters closely following the acidity function. This fact, together with the variation in rate of hydrolysis of carbamates of cyclic alcohols with the ring size, shows that, unlike the solvolyses of the corresponding chloroformates which lead to carboxonium ions (\documentclass{article}\pagestyle{empty}\begin{document}$ {\rm R - O -}\mathop {\rm C}\limits^{{\rm (+)}} = {\rm O} $\end{document}), these reactions involve the intermediate formation of carbonium ions.
Untersuchungen über das Verhalten organischer Mischphasen 5. Mitteilung Dampfdrücke. therodynamische Mischungsfunktionen und Brechungsindices des binären systems Cyclohexan ‐ diäthyläther bei 25°
Authors: Arm H. , Bánkay D. , Strub Kathrin , Wälti M. 
Published: December 2004

AbstractThe total vapor pressures and the heats of mixing of the system cyclohexane‐diethyl ether were measured at 25°C. The index of refraction was used to determine concentrations for the total pressure measurements. The partial pressures, activity coefficients, excess free energies, and entropy functions were calculated.
Propriétés themodynamiques des mélanges binaires. Chaleurs de mélange des n‐alcanes ainsi que de leurs isomères
Authors: Fernández‐García J. G. , Boissonnas Ch. G. 
Published: December 2004

AbstractThe following heats of mixing have been measured: the five isomers of hexane with n‐dodecane at 10°, 20° and 30°C, and with n‐hexadecane at 20°C, as well as the systems dodecane‐hexene‐1 at 20°C, and dodecane‐methyl‐2‐pentene‐1 at 10° 20° and 30°C.
Cyclische, gekreuzt‐konjugierte Bindungssysteme. XIII. NMR.‐untersuchungen am Phenafulven‐system
Authors: Prinzbach H. , Freudenberger V. , Scheidegger U. 
Published: December 2004

AbstractThe HNMR. spectra of phenalene, phenalenone, of some protonated and alkylated derivatives and the spectra of some substituted phenafulvenes are discussed and very qualitatively correlated with the π‐electron distribution in some of these systems.
Recherches sur la formation et la transformation des esters LXXIV [1] etude à l'aide de H2[18O] de la scission de quelques monoesters N‐phénylthiocarbamyl(ou N‐phénylcarbamyl)‐ aminoalcoylphosphoriques et de l'acide dibromo‐2,3‐allyl‐phosphorique
Authors: Cherbuliez Emile , Moll H. , Baehler B. R. , Rabinowitz J. 
Published: December 2004

AbstractThe scission of some N‐phenylthiocarbamoyl(or phenylcarbamoyl)‐aminoalkyl phosphoric monoesters and of 2,3‐dibromoallyl phosphoric monoester is studied in H2[18O], at 100°C and at various pH.
Über eine neuartige Synthese von β‐Ketoallenen durch Reaktion von tertiären Acetylencarbinolen mit Vinyläthern eine ergiebige methode zur darstellung des Pseudojonons und verwandter verbindungen
Authors: Saucy G. , Marbet R. 
Published: December 2004

AbstractThe novel acid‐catalysed reaction of isopropenyl ether with tertiary acetylenic carbinols to give β‐ketoallenes in high yields is described. Upon treatment with bases, these allenes readily undergo isomerization to conjugated dienones. This reaction sequence results in an economic synthesis of pseudo‐ionones and pseudo‐irones from dehydrolinalool and its homologs.
Desaminierung von 6‐Aminopenicillansäure
Authors: Hauser D. , Sigg H. P. 
Published: December 2004

AbstractThe synthesis of 6α‐acyloxy‐penicillanic acids either by deamination of 6‐amino‐penicillanic acid or by rearrangement of N‐nitroso‐penicillins is described.