bluuebunny/crossref_metadata_2025_split huggingface dataset:
Über die Reduktion von 2‐Cyanomethyl‐benzimidazol
Authors: Balsiger R. W. , Hänni H. , Schindler O. 
Published: December 2004

AbstractDie Hydrierung von 2‐Cyanomethyl‐benzimidazol (I) mit Raney‐Nickel in Alkohol in Gegenwart von Piperidin führt nicht zum erwarteten 2‐(β‐Piperidino‐äthyl)‐benzimidazol (III), sondern zu 2‐(β‐Piperidino‐vinyl)‐benzimidazol (II).
Die Ableitung der Stereochemie von 1‐Isopropyl‐4‐methyl‐bicyclo[3.1.0]hexan (cis‐und trans‐Thujan) durch Protonenresonanz‐Spektroskopie
Authors: Dieffenbacher A. , von Philipsborn W. 
Published: December 2004

Abstract100 Mc/s proton NMR. spectra of the two diastereoisomeric thujanes obtained by reduction natural thujone have been measured and are given a detailed analysis. The relative configurations of the two hydrocarbons are deduced. Together with the known R‐configuration at C(1) the absolute configurations can be derived, (−)‐cis‐thujane having the (1R:4S:5R)‐ and (+)‐trans‐thujane the (1R:4R:5R)‐configuration. It can be shown that the trans‐isomer adopts a boat‐like conformation of the bicyclohexane ring system whereas cis‐thujane prefers a half‐chair conformation with a flattened cyclopentane ring.
DNA‐Abbau und Oxydation von o‐Phenylendiamin. Metallionen und H2O2, 8. Mitteilung
Authors: Zell R. , Sigel H. , Erlenmeyer H. 
Published: December 2004

AbstractIn earlier papers it has been stated, that the catalytic activity of several metal complexes in H2O2 decomposition is caused by the formation of ternary HOO−‐Me2+‐ligand complexes. The present investigation deals with the effect of traces of metal ions on two other reactions. The degradation of DNA by autoxidizable, H2O2 producing methylhydrazines is stopped by P2O74−. This effect is shown to be due to complex formation of the metal ions with P2O7−4, preventing the formation of the catalytically active ternary complex. The catalysis of the H2O2 oxidation of o‐phenylenediamine by pyridine‐2,6‐dicarboxylic acid is dependent on traces of Fe2+ ions; this latter effect is equally suppressed by P2O7−4.
Zur Synthese des Ecdysons. IV. Mitteilung über Insektenhormone. Die Synthese des natürlichen Häutungshormons
Authors: Kerb U. , Schulz G. , Hocks P. , Wiechert R. , Furlenmeier A. , Fürst A. , Langemann A. , Waldvogel G. 
Published: December 2004

AbstractEcdysone (9), a hormone responsible for the skin shedding process of arthropoda, has been synthesized. (20S)‐2β,3β‐Diacetoxy‐20‐formyl‐5β‐pregn‐7‐en‐6‐one was prepared from the corresponding carboxylic acid and converted into ecdysone by a GRIGNARD reaction with 2‐methyl‐3‐butyn‐2‐ol tetrahydropyran‐2‐yl ether, followed by hydrogenation of the triple bond, removal of the protecting groups, and hydroxylation in the 14α‐position. C‐22‐isoecdysone was obtained as a by‐product.
Unterscheidung der Penicilloinsäuren von funktionellen Derivaten ihrer. α‐Carboxylgruppe mittels Penamaldat‐Stabilitätsbestimmung
Authors: Schneider C. H. , De Weck A. L. 
Published: December 2004

AbstractThe distinction between derivatives of penicilloic acids with modified α‐carboxyl function and the corresponding penicilloic acids themselves by means of a photometric test is described. The procedure involves conversion of the penicillin derivatives to penamaldates by the action of mercuric chloride, and comparison of the stability of the extinction at 282 nm in phosphate buffer at pH 7,4. The stabilities of the free penamaldates made from penicilloic acids are quite low (half life 4 to 5 minutes) and contrast with the high stabilities of penamaldoyl derivatives obtained from the α‐derivatives of penicilloic acids. Some characteristics of the method are discussed, and its potential usefulness for the quantitative analysis of mixtures of penicilloic acid and α‐derivatives of penicilloic acid is demonstrated.
Chemische Aspekte der Penicillin‐Allergie: Die direkte Penicilloylierung von ϵ‐Aminogruppen durch Penicilline bei pH 7, 4
Authors: Schneider C. H. , De Weck A. L. 
Published: December 2004

AbstractThe aminolysis of penicillins by ε‐amino groups at pH 7,4 is demonstrated. It is shown that penicillenic acid, formed spontaneously under these conditions from penicillins, does not contribute significantly to the penicilloylations observed. Penicillin therefore can directly form penicilloylamides under physiological conditions.
Herstellung von Aryl‐isothiocyanaten aus Arylaminen und Bis‐diäthylthiocarbamoylsulfiden
Authors: Marquardt F.‐H. 
Published: December 2004

AbstractThe preparation of aryl‐isothiocyanates from aryl‐amines and bis‐diethylthiocarbamoyl sulfides is reported and mechanisms are proposed for these reactions of thiocarbamoyl derivatives.
Note sur la préparation et la scission de l'acide (diméthyl‐3, 3‐butyl)‐phosphorique
Authors: Cherbuliez Emile , Espejo O. , Jaccard S. , Rabinowitz J. 
Published: December 2004

Abstract3,3‐Dimethylbutanol treated with polyphosphoric acid or with an equimolecular amount of POCl3 gives rise to 3,3‐dimethylbutyl phosphoric acid, isolated as baryum salt (yield 20 to 30%) or as sodium salt (yield 15%). Stable in NaOH 1N at 100°C, this monoester is split at pH 4.5 and in HCl 1N much slower than choline phosphate.
Die Beeinflussung des photochemischen Verhaltens von Farbstoffmolekeln in Lösung durch Fremdsubstanzen. Lösungen von Chinizarin in aliphatischen Kohlenwasserstoffen in Gegenwart aromatischer Verbindungen
Authors: Somers B. G. , Zürcher R. F. , Labhart H. 
Published: December 2004

AbstractThe acceleration of the photolysis of several anthraquinone derivatives by admixture of various substances, notably of carbonyl compounds ans lead(IV) salts has been studied in a variety of solvents. The sensitization of the photolysis results from the production of radicals either directly from the irradiated lead salts or from the solvent upon hydrogen atom abstraction by the excited carbonyl compounds, probably in the triplet state. The reaction of these radicals with the dye results in the formation of several derivatives of its leuco form, whose absorption in the visible and ultraviolet closely resemble that of the unsubstituted leuco form. These reactions are observed in very dilute solutions, in which intermolecular energy transfer is not expected to occur.
De la chimie des ptérines. 16e communication. Obtention de ptérines méthylées et de leurs dérivés tétrahydrogénés
Authors: Viscontini M. , Bobst A. 
Published: December 2004

AbstractNous décrivons la synthèse des ptérines méthylées, dont les dérivés tétrahydrogénés nous ont servi à établir le mécanisme probable de réoxydation des tétrahydroptérines en dihydro‐7,8‐ptérines, en passant par l'intermédiaire d'une dihydroptérine quinoïdique instable.
Synthese und pharmakologische Wirkung einiger 5‐Alkyl‐ und 5‐Alkenyl‐4‐hydroxyisophtalsäuren und ‐Ester
Authors: Mühle H. , Bänninger H. , Ernst L. , Meier W. 
Published: December 2004

AbstractThe synthesis of some 5‐alkyl‐ and 5‐alkenyl‐4‐hydroxy (resp. acyloxy‐ resp. alkoxy)‐isophthalic acids and esters is described. Some of the described derivatives exhibit analgetic, antipyretic and antiphlogistic activity.
Adigosid, Strukturbestimmung Glykoside und Aglykone, 282. Mitteilung
Authors: Hoffmann St. , Weiss Ek. , Reichstein T. 
Published: December 2004

AbstractThis publication reports the preparative isolation of adigoside from the seeds of Nerium oleander L. with a yield of 250 mg crystalline adigoside per kilogram of seeds. Mild acid hydrolysis of adigoside gave crystalline D‐diginose (8) and amorphous adigenin (6), which in turn gave a crystalline mono‐O‐acetyl derivative 7. With the aid of physical methods, degradative reactions and partial synthesis of 7, the structure of adigenin was proved to be that of 16‐O‐isovaleryl‐gitoxigenin. On the basis of molecular rotation it was shown that the sugar in adigoside (2), in accordance with the KLYNE Rule, is bound in the β‐D‐pyranosidic form. Adigoside showed no (or at the most very weak) digitalis type activity on the cat. This lack of activity must be due to the esterification of the 16‐hydroxyl group by isovaleric acid, as it is known that an acetyl residue in the same position enhances rather than lowers the activity of 16β‐hydroxy‐cardenolides.
Synthesen substituierter Butenolide
Authors: Haefliger W. , Petrzilka T. 
Published: December 2004

AbstractEs wird die Darstellung von Butenoliden des Typs II beschrieben, und es werden die Erfahrungen diskutiert, die bei der Kondensation dieser Verbindungen mit β‐Mercapto‐acrylestern gemacht wurden.
Photolyse von 2, 2, 4, 4‐Tetramethylcyclobutanon‐Derivaten
Authors: Hostettler H. U. 
Published: December 2004

AbstractThe photochemical reactions of the 2, 2, 4, 4‐tetramethylcyclobutanones 1–6 carrying various substituents in 3‐position were investigated. The major reaction in alcoholic solution or in the presence of other protic compounds was the formation of the semicyclic acetals 7–12. Parallel to this reaction decarbonylation occurred, leading to stable cyclopropane derivatives in some cases, depending on the substituents present. Cyclopropanes with an exocyclic double bond underwent ring opening easily or, in case of an exocyclic carbon‐nitrogen double bond, added alcohol, thus forming cyclopropane O, N‐ketals. Alkyl‐acyl biradicals are proposed as common intermediates for both photoreactions. Based on analogy to similar photoreactions reported in the literature, the formation of the semicyclic acetals is assumed to involve a carbene intermediate.
Steroide und Sexualhormone. 231. Mitteilung. Die Synthese von N‐Acetyl‐3‐aza‐A‐homo‐5β, 10α‐androstan und seines 5α‐Isomeren (Vorläufige Mitteilung)
Authors: Eggart Frl. G. , Wehrli H. 
Published: December 2004

AbstractA synthesis of N‐acetyl‐3‐aza‐A‐homo‐5β, 10α‐androstane (14) and N‐acetyl‐3‐aza‐A‐homo‐5α, 10α‐androstane (15) is described, starting from 2‐oxo‐17β‐acetoxy‐Δ5‐10α‐androstane (4).
Der Einfluss von Dimethylsulfoxid und Dioxan auf die Reaktionen von 2,4‐Dinitrofluorbenzol und 2,4‐Dinitrochlorbenzol mit Piperidin in Benzol. 4. Mitteilung über nucleophile aromatische Substitutionsreaktionen
Authors: Bernasconi C. F. , Kaufmann M. , Zollinger Hch. 
Published: December 2004

Abstract(1) The rates of the reactions of 2,4‐dinitrofluoro‐ and 2,4‐dinitrochlorobenzene with piperidine as influenced by the addition of dimethylsulfoxide and p‐dioxane have been measured in benzene solution.
Stoffwechsel‐Endprodukte von PhyllochinonMenachinon‐4, Ubichinon‐9 und Hexahydroplastochinon‐4 (Phytylplastochinon)
Authors: Gloor U. , Würsch J. , Mayer H. , Isler O. , Wiss O. 
Published: December 2004

AbstractPhylloquinone, menaquinone‐4, ubiquinone‐9 and hexahydroplastoquinone‐4,i.e.compounds with isoprenoid side‐chains which differ by their length and degrees of unsaturation, are degraded in the rat in the same way as tocopherols. After oxidative shortening of the side‐chain to seven C‐atoms, the metabolites are excreted in the urine as conjugates, presumably glucuronides, which, after hydrolysis, can be isolated as γ‐lactones.
Etude de composés d'addition des acides de Lewis XXVIII. Constantes de Hammett et vibration carbonyle des composés formés par TiCl4 et SbCl5 avec des chlorures de benzoyle parasubstitués
Authors: Jaccard J.‐Cl. , Susz B. P. 
Published: December 2004

AbstractThe adducts of benzoyl chlorides p‐substituted by CH3O, CH3, and H with the electronic acceptors SbCl5 and TiCl4 have been prepared, and the IR. absorption spectra of the solid products studied.
Zur Kenntnis des Muscazons. 24. Mitteilung über Inhaltsstoffe von Fliegenpilzen
Authors: Reiner R. , Eugster C. H. 
Published: December 2004

AbstractFür die aus Amanita muscaria (L. ex FR.) HOOKER isolierte racemische α‐Aminocarbonsäure Muscazon wird die Struktur eines [2(3H)‐Oxazolonyl‐(5)]‐glycins chemisch abgeleitet.
Über die Eigenschaften des Xp‐Teils von AnBXp‐Kernresonanzspektren
Authors: Diehl P. , Weisenhorn P. 
Published: December 2004

AbstractThe subspectral breakdown of the X‐part in AnBXp‐spectra is derived and the general properties of the subspectra are discussed. The nature of the asymmetry of Xp‐spectra for n > 1 is explained and conditions for its disappearance are given. The degeneration of the Xp‐part into deceptively simple spectra is described and degeneration conditions are derived. The determination of relative signs of coupling constants is discussed.
Die sterischen Bedingungen der Fragmentierungsreaktion. II. Teil. Stereoisomere 3‐Aminocyclohexyl‐p‐toluolsulfonate. Fragmentierungsreaktionen, 15. Mitteilung
Authors: Burckhardt U. , Grob C. A. , Kiefer H. R. 
Published: December 2004

AbstractThe solvolytic fragmentation of cis‐ and of trans‐3‐amino‐cyclohexyl p‐toluenesulfonates 8a and 9a and the corresponding N, N‐dimethyl derivatives 8b and 9b has been studied. In 80% ethanol the cis‐amino‐tosylates 8a and 8b react faster than the homomorphous cis‐3‐alkyl‐cyclohexyl tosylates 11a and 11b to yield fragmentation product exclusively or predominantly. The synchronous mechanism predictable on stereoelectronic grounds is therefore indicated.
Photochemische Reaktionen. 39. Mitteilung. Photochemische Umwandlungen von endo‐Tricyclo[4.3.12,5.0]‐decadien‐(3,8)‐dion‐(7,10) und cis‐8, 9‐Dihydroindenon
Authors: Baggiolini E. , Herzog E. G. , Iwasaki S. , Schorta R. , Schaffner K. 
Published: December 2004

AbstractIn boiling xylene the cyclopentadienedione 1 is thermally decarbonylated to cis‐8,9‐dihydroindenone (8). This method avoids secondary reactions and allows the preparation of 8 in high yield.
Recherches dans la série des cyclitols XXXIV. Sur le complexe diborique du scyllitol
Authors: Posternak Th. , Lucken E. A. C. , Szente A. 
Published: December 2004

AbstractLe complexe diborique du scyllitol, préparé autrefois par réduction du scyllo‐ms‐inosose au moyen du borohydrure de sodium, s'obtient plus simplement par action à température ordinaire du tétraborate de sodium sur le scyllitol. Sa structure de complexe bis‐tridenté a été confirmée par RMN. Ses constantes de formation ont été déterminées. Un mode pratique d'obtention du scyllitol est décrit.
Die Pregnanderivate der Wurzeln von Asclepias lilicina WEIMARCK. II. Strukturbestimmungen Glyoside und Aglykone, 291. Mitteilung
Authors: Sawlewicz Ludwika , Weiss Ek. , Reichstein T. 
Published: December 2004

AbstractPartial formulae have been derived for the nine lilacinosides which were isolated, partly in pure form, and for two related substances which were only obtained as a mixture. These substances are derived basically from two pregnane derivatives (sarcostin and deacetyl‐metaplexigenin) present in partially benzoylated form. Of these were isolated genin B = 12,20‐di‐O‐benzoyl‐sarcostin (1), genin C = 12‐O‐benzoyl‐20‐O‐acetylsarcostin (2), and genin D, which could be identified with 12‐mono‐O‐benzoyl‐desacetyl‐metaplexigenin (4). These three genins are bound to different sugars, the latter being present as mono‐, di‐, tri‐ and probably tetra‐saccharides. The structures of these were partially derived: after mild hydrolysis three new disaccharides were obtained, which are named asclepobiose (U1), lilacinobiose (U2) and digalilobiose (U5). U1 and U2 were isolated in crystalline form. On hydrolysis U1 yielded 3‐O‐methyl‐6‐deoxy‐D‐allose (U3), U2 yielded 3‐O‐methyl‐6‐deoxyglucose (thevetose), and digitalose was obtained from U5.
Optische Rotationsdispersion und Konfiguration bei Cardenoliden
Authors: Burkhardt F. , Meier W. , Fürst A. , Reichstein T. 
Published: December 2004

AbstractIn accordance with the results of Weiss & ZIFFER, the ORD spectra of cardenolides with few exceptions show a distinct Cotton effect, caused by the butenolide ring. The two extrema lie at about 260 and 228 nm; the extremum at shorter wave length is very difficult to measure, and that at longer wavelength shows fine structure in dioxane. 14α,17β‐cardenolides having either a hydrogen atom or a hydroxyl group at C‐14 and no double bond in rings C and D show a negative Cotton effect, whereas compounds of the other three stereoisomeric types (14α,17α; 14β,17α and 14β,17β) show a positive Cotton effect. In the case of cardenolides having an oxo group, the extremum of the oxo group at shorter wavelength overlaps that of the butenolide ring at longer wavelength. In spite of this the latter extremum could still be seen distinctly in all cases investigated to date.
Recherches sur les arǒmes 13e communication [1] Sur 1′ arǒme de café. I
Authors: Stoll M. , Winter M. , Gautschi F. , Flament I. , Willhalm B. 
Published: December 2004

AbstractThe analysis of a coffee concentrate is described: 202 constituents have been identified, 154 of which for the first time. Some of these compounds are new chemicals; their synthesis is described. Most identifications are based upon mass spectrometry combined in many cases with IR. spectrometry and comparison with reference compounds. MS. and IR. data are given in detail. The analysis shows that a large number of minor constituents is present, many of which could not be identified.
Das biologische Verhalten von Fettsäuren mit Dreifachbindung II: Behenolsäure
Authors: Bernahard K. , Yekundi K. , Greub H. R. 
Published: December 2004

AbstractBehenolic acid fed to rats as a triglyceride is incorporated into depot fat but not into liver lipids. From urine the same metabolite as after feeding of stearolic acid, i. e. 5‐decyne‐dicarboxylic acid, was isolated.
Alkaloide aus vinca herbacea W.K. VIII. Mitteilung Isolierung und struktur von Hervin
Authors: Ognyanov I. , Pyuskyulev B. , Bozjanov B. , Hesse M. 
Published: December 2004

AbstractAus Vinca herbacea W. K. WURDE ein neues Alkaloid, Hervin, isoliert, für das im wesentlichen auf Grund spektroskopischer Befunde die Struktur 1 abgeleitet wurde.
Magnetische Kernresonanz‐ und «Molecular Orbital»‐ untersuchungen über die struktur von MEISENHEIMER‐komplexen 8. Mitteilung über nucleophile aromatische Substitutionsreaktionen [1]
Authors: Caveng P. , Fischer P. B. , Heilbronner E. , Miller A. L. , Zollinger H. 
Published: December 2004

Abstract(1) The NMR. spectra of the stable methoxide addition complexes of 2,4‐dinitro‐, 2,4,6‐trinitro‐ and 2,4‐dinitro‐6‐cyano‐anisole, and the intramolecular (spiro) reaction product of 1‐(2′‐hydroxyethoxy)‐2,4,6‐trinitrobenzene demonstrate that these products are MEISENHEIMER (σ−) complexes (addition of base in position 1).
Kupferkomplexe von Bisamiden: Struktur und Stabilität I
Authors: Zuberbühler A. , Fallab S. 
Published: December 2004

AbstractComplex formation between Cu2+ and several ligands, each containing two amino and two amide groups, has been studied potentiometrically and spectrophotometrically. A digital computer was used to determine the composition of the complex species formed and to calculate their stability constants. N,N′‐diglycyl‐1, 2‐diaminoethane and its homologues form 5‐, 6‐, 7‐, 8‐ and 9‐membered rings between the two amide groups, respectively. No tendency towards formation of binuclear species has been observed.
Recherches sur la formation et la transformation des esters LXXIII Sur la préparation d'acides ω‐[aryl (ou aralcoyl ou alcoyl) carbamylamino]‐alcoylphosphoriques et sur leur vitesse de scission à divers pH
Authors: Cherbuliez Emile , Behler B. R. , Espejo O. , Frankenfeld E. , Jaccard S. , Rabinowitz J. 
Published: December 2004

AbstractN‐Aryl(or aralkyl or alkyl)carbamoyl‐aminoalkyl phosphoric monoesters have been prepared by the reaction of isocyanates R′‐NCO on the corresponding amino‐alkylphosphoric monoesters H2NROPO3H2 in the presence of 2 equivalents of NaOH. The rates of scission of the phosphoric monoester group and occasionally of the phenylcarbamoylamino group of these monoesters have been studied at 100°, in solutions 0.1M in ester and at various pH.
Fonte zonale et analyse de pureté dans les iodures alcalins
Authors: Ecklin Daniel 
Published: December 2004

AbstractDie Alkalijodide KI, RbI und CsI wurden durch Zonenschmelzverfahren bis zu einem Gesamtrestgehalt an zweiwertigen Ionen von höchstens 1 ppm gereinigt. Die Kristalle wurden dann auch mit Mg++, Ca++, Sr++, Eu++ oder Mn++ genau dotiert.
Gas‐chromatographische und massenspektrometrische Untersuchung der Trimethylsilyläther von Vitamin A und einigen seiner Isomeren
Authors: Vecchi M. , Vetter W. , Walther W. , Jermstad S. F. , Schutt G. W. 
Published: December 2004

AbstractVitamin A and some of its isomers are separated and quantitatively determined as trimethylsilylethers by gas liquid chromatography. The identity of the different fractions is proved by mass spectrometry.
Darstellung und strukturelle Eigenschaften von Ni(CN)2, 2H2O und Ni(CN)2, 11/2 H2O
Authors: Ludi A. , Hügi R. 
Published: December 2004

AbstractNi(CN)2,2H2O is prepared as a powder of a very light violet color by slow addition of very dilute sulfuric acid to a boiling aqueous solution of K2[Ni(CN)4], H2O. It has a cubic unit cell with a cell edge of 10.10 Å. The nickel ions form a cubic face‐centered lattice analogous to the structure of Prussian Blue.
Über die Chemie des Vitamins E. 8. Mitteilung [1]. Die Stereochemie von natürlichem γ‐Tocotrienol (Plastochromanol‐3), Plastochromanol‐8 und Plastochromanol‐8
Authors: Mayer H. , Metzger J. , Isler O. 
Published: December 2004

AbstractThe stereochemistry of γ‐tocotrienol (plastochromanol‐3) from latex of Hevea brasiliensis (rubber tree), plastochromanol‐8 from leaves of Hevea brasiliensis, and plastochromenol‐8 from tobacco is reported.
Die Bestimmung von Nanogramm‐Mengen Quecksilber aus Lösungen durch ein flammenloses atomares Absorptionsverfahren
Authors: Brandenberger H. , Bader H. 
Published: December 2004

AbstractA flameless atomic absorption method for the determination of small amounts of mercury in solutions is described. The mercury is amalgamated quantitatively on a copper wire and subsequently vaporized in an absorption cell which is placed in the light path of a commercial atomic absorption instrument. The mercury vapor can be quantitatively determined by its absorption of the 253.7 nm mercury line. The method has a detection limit of 0.2 ng and is therefore about 10000 times more sensitive than atomic absorption analysis using flame atomization.
Synthèses dans la série des bis‐indéno‐fluorénes III [1]. Dihydro‐14, 15‐13H‐bis‐indéno[2,1‐a;1′,2′,‐i]fluorène et dihydro‐14, 15‐8H‐bis‐indéno [2, 1‐a;2′,1′‐h]fluorène
Authors: Hammer Wolfgag , Chardonnens Louis 
Published: December 2004

AbstractStarting from 2‐bromo‐9‐oxo‐fluorene‐1‐carboxylic acid the biangular bis‐indenofluorene 14, 15‐dihydro‐13H‐diindeno[2, 1‐a; 1′, 2′‐1]fluorene (VIII) and the monoangular 14, 15‐dihydro‐8H‐diindeno[2, 1‐a; 2′, 1′‐h]fluorene (XI) have been synthesised in 6 resp. 7 steps (overall yield 22% resp. 18%). As intermediate compounds the 14‐oxoderivatives of VIII and XI were also obtained.
Sur la composition de l'arôme de thé noir II
Authors: Bricout J. , Viani R. , Müggler‐Chavan F. , Marion J. P. , Rwymond D. , Egli R. H. 
Published: December 2004

AbstractTrans‐2‐penten‐1‐ol, 1‐ethyl‐2‐formyl‐pyrrole, 2‐trans, 4‐cis‐heptadienal, phenyl‐acetonitrile, methyl benzoate, 2‐phenyl‐but‐2‐enal and the lactone of 2,6,6‐trimethyl‐2‐hydroxy‐cyclohexylidene acetic acid have been separated from black tea aroma by gas‐liquid chromatography, and identified by infra‐red and mass spectrometry.
11‐Amino‐5H‐dibenzo[b, e]‐1, 4‐diazepine. 10. Mitteilung über siebengliedrige Heterocyclen
Authors: Hunziker F. , Fischer E. , Schmutz J. 
Published: December 2004

Abstract11‐Amino‐5H‐dibenzo[b,e]‐1, 4‐diazepines V, several of which possess neuroleptic properties, have been prepared using three methods:

Aminolysis of either iminothioethers IV (X = methyl or an activating group such as cyanomethyl and p‐nitrobenzyl) or the iminochlorides III.
Bischler‐Napieralski type cyclodehydration of o‐anilinophenyl‐ureas IX (only applicable for the synthesis of compounds V where R is other than hydrogen).
Cyclodehydration of amino‐amides VII by various condensing agents.