By Professor Gianfranco Cainelli, Professor Giuliana Cardillo (auth.)
Chromium oxidation, renowned and extensively explored in natural chemistry because the very starting of this technology, is a subject of present curiosity for the natural chemist as evidenced by way of the continual improvement of recent techni ques and methods suggested within the literature. Chromium oxidation is an easy method which are simply played within the laboratory and scaled up in besides. even though nearly each oxidizable natural sensible team may perhaps suffer chromium oxidation, an important fields of appli cation are the oxidation of alcohols, allylic and benzylic oxidation, oxidative degradation and oxidation of a few organometallic compounds. A excessive measure of selectivity is usually attainable by way of deciding on the main appropriate reagent between these numerous ones now to be had. This booklet takes account of some of the useful teams that endure oxidation and the whole literature as much as 1982. it's been written within the wish to aid the artificial natural chemist in his experimental paintings. For this function a couple of tables comprising yields and references were integrated; particular descriptions of usual strategies are supposed to express the experimental stipulations and the scope of the reactions. we want to thank Dr. Mario Orena for his worthy clinical and technical assistence and Prof. Bruno Camerino, who learn the complete manuscript and corrected a number of the blunders. Bologna, February 1984 Gianfranco Cainelli Giuliana Cardillo desk of Contents I. creation . . . . . . . . . . .
Read or Download Chromium Oxidations in Organic Chemistry PDF
Best organic books
The Dictionary of nutrition Compounds with CD-ROM: ingredients, Flavors, and components presents entire info on 30,000 compounds present in nutrition, including:NATURAL foodstuff CONSTITUENTSLipidsProteinsCarbohydratesFatty acidsFlavonoidsAlkaloidsFOOD ADDITIVESColorantsPreservativesAntioxidantsFlavorsFOOD CONTAMINANTSMycotoxinsNUTRACEUTICALSProbioticsDietary SupplementsVitamins
Present study in carbohydrates is commencing to diversity throughout conventional divisions in chemistry and biology, giving upward push to a brand new interdisciplinary box, glycoscience. The growing to be curiosity in glycoscience stems from the invention that oligosaccharides play a big function in acceptance occasions and from the becoming call for for chiral synthesis, when you consider that sugars provides an amazingly reasonable resource of chiralitiy.
This concise and obtainable publication offers natural chemistry notes for college students learning chemistry and similar classes at undergraduate point, masking center natural chemistry in a layout excellent for studying and quick revision. the cloth is organised in order that primary options are brought early, then outfitted directly to supply an summary of the necessities of practical staff chemistry and reactivity, best the scholar to a superior knowing of the fundamentals of natural chemistry.
- Applications of Artificial Intelligence for Organic Chemistry: The Dendral Project (McGraw-Hill advanced computer science series)
- Handbook of Reagents for Organic Synthesis, Catalyst Components for Coupling Reactions
- Fundamentals and Applications of Organic Electrochemistry: Synthesis, Materials, Devices
- Catalytic Hydrogenation in Organic Syntheses
Extra resources for Chromium Oxidations in Organic Chemistry
Steroids, p. 507, New York, Reinhold Publ Corp. 1959 25. FIAT, Final Report nO 996 26. : Chern. Ber. 66, 1274 (1966) 27. : Mikrochemie ver. Mikrochem. Acta 33,51 (1978) 28. : Comprehensive Analytical Chemistry, Vol. 1B (ed. Wilson and Wilson), Amsterdam, Elsevier 1960 29. : Methoden der Organ. Chemie (Houben-Weil), Vol. II, p. 276, Stuttgart, Thieme 1953 30. Cfr. : Acta Acad. Scandinavica 6,682 (1952) 31. Tashinian, V. , Baker, M. , Koch, e. : Anal. Chern. 28,1304 (1956) 32. Westheimer, F. : Chern.
L(COOH Na2C1'207 H2O I Na2CI'207 H2O s I N Table 4 reports the most interesting results obtained. 2 1 at 250°C for 15-18 hrs. The green hydrated chromium oxide in the reaction mixture is separated by filtration and the filtrate acidified with hydrochloric acid. After the mixture has cooled overnight the precipitate is filtered, washed well with water, and air dried giving 240 to 256 g (87-93 %) of 2,3-naphthalenedicarboxylic acid. The selectivity of this procedure is indicated by the oxidation of 2-methylnaphthalene which is cleanly converted into 2-naphthoic acid, whereas use of most-other oxidants results in ring degradation and formation of a considerable amount of 2-methylnaphthoquinone [65, 67]: rOO( c=::~:.
Oxidation of Carbon-Hydrogen Bonds in high yields to polynuclear carboxylic acids. Selective conversion of hydrocarbons such as I-methylnaphthalene, 2,6-dimethylnaphthalene, 4methylphenanthrene, 3-methylnaphthalene, and 3-picoline to their aromatic or heterocyclic carboxylic acids in 80-85 % yield illustrates the utility of this method : ~ ~ 00 0s lOr N .. N82 CI'2 07 H2O HOOC~ COOH Q6? N82C1'207 H2O COOH .. OCOOH .. [l(COOH Na2C1'207 H2O I Na2CI'207 H2O s I N Table 4 reports the most interesting results obtained.
- Win at Chess: A Comprehensive Guide to Winning Chess for the by Ron Curry
- Small Organic Molecules on Surfaces: Fundamentals and by Peter Puschnig, Georg Koller, Claudia Draxl, Michael G.