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Atropisomeric 8,8'-biquinolyl derivatives : synthesis, properties and applications

Creator:: Milicevic, Selena D.
Abstract:: 7,7'-Dihydroxy-8,8'-biquinolyl (azaBINOL) was prepared from 7-hydroxyquinoline via N,N-dimethyl O-quinol-7-yl carbamate by directed ortho-metallation followed by FeCl₃-mediated oxidative coupling of the 8-lithioquinoline intermediate. Saponification of the resulting dicarbamate provided crystalline (±)-azaBINOL in 56% overall yield. 6,6'-Bis(dimethylaminocarbonyl)-7,7'-dihydroxy-8,8´-biquinolyl was prepared from the same dicarbamate by a double anionic-Fries rearrangement in 43% yield. 7,7'-Bis(diethylamino-carbonyloxy)-6,6'-diiodo-8,8´-biquinolyl...
Resource Type:: Dissertation

Synthetic studies toward a total synthesis of paeoniflorigenin

Creator:: Hong, Zhenqiu
Abstract:: A new approach towards a total synthesis of paeoniflorigenin is discussed. The approach involves the application of regio- and stereoselective [2+2] photocycloaddition for the preparation of a key intermediate, cyclobutanone 86, and model studies on diiodosamarium (Sm12) mediated pinacol coupling of a diketone. Intermolecular [2+2] photocycloaddition of a,13unsaturated lactam 33...
Resource Type:: Masters Thesis
Full Text:: regioselectivity of the oxidation. 27 102, Rose Bengal, CH2Cl2, i-Pr2EtN , -78°C OH (74%) R. These

Continuous sample flow and mercury (II) speciation studies utilizing the cold vapor atomic absorption method for mercury determination

Creator:: Oda, Carl Ekio
Resource Type:: Masters Thesis

Total Synthesis of Isotopologues of Xanthohumol and its Congeners for Biological Studies

Creator:: Plagmann, Layhna S.
Abstract:: Xanthohumol [XN, (E)-6´-methoxy-3´-(3-methylbuten-2-yl)-2´,4´,4´´-trihydroxychalcone], the principal prenylated chalcone from hops, and its 2,3-dihydro- (DXN) and O6-desmethyl-2,3-dihydro- (DDXN) congeners, are of potential utility for the amelioration of metabolic syndrome; however, their complex bioactivity profiles cannot be properly studied and understood without access to appropriately produced synthetic materials. In the first part of...
Resource Type:: Masters Thesis

Synthesis of novel ambifunctional atropisomeric 2,2',6,6'-tetrasubstituted biphenyls and investigation of their properties and organocatalytic activity

Creator:: Sephton, Mark Alan
Abstract:: Ambifunctional axially chiral 2,2',6,6'-tetrasubstituted biphenyls containing nucleophilic (or basic) functional groups juxtaposed with hydrogen-bond donors were synthesized and their properties studied. Applications for the prepared biaryls as potential organocatalysts for enantioselective carbon-carbon bond forming reactions were examined. Processes investigated included: aldol, Michael, nitroaldol (Henry), and Baylis-Hillman reactions. The novel amidoamine...
Resource Type:: Dissertation

Excess amino acid feeding as affecting the growth rate of rats

Creator:: Lundeen, Berta Barbara
Resource Type:: Masters Thesis
Full Text:: teoted for its growth promoting action1 Rose ws ie to ebw that on11' ten amino acids are esaant.ial

The preparation and heats of formation of some nickel and cobalt complex salts with certain organic bases

Creator:: Costa, Albert B.
Resource Type:: Masters Thesis
Full Text:: blue crystals. Using the same procedure with cobalt oxalate rose-colored crystals were obtained

Studies towards the total syntheses of (+)-phomactins A, D and G

Creator:: Schwartz, Keith D.
Abstract:: Studies towards the total synthesis of (+)-Phomactin A (1), D (6), and G (9), fungal metabolites with unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediates 354 and 356, which contain all of the carbon atoms of 1, 6 and 9....
Resource Type:: Dissertation
Full Text:: in 37 linear steps and with a 0.095 % overall yield. 19 O O 1. Rose Bengal, hυ

Multielement atomic absorption and fluorescence spectrometry

Creator:: Salin, Eric Dunbar
Abstract:: A multielement spectrometer has been developed for the simultaneous determination of four elements by atomic absorption (AA) or atomic fluorescence (AF). The spectrometer is based on a multiple exit slit monochromator and uses a mirrored funnel to direct light from the various exit slits to a single photomultiplier. There are...
Resource Type:: Dissertation

Heats of formation of certain cobalt pyridine complexes

Creator:: Rogers, Charles Junior
Resource Type:: Masters Thesis
Full Text:: LU 2. z u. LU '6 HEAT CAPACIT' OF THE C/\LORINÌETER AT 2C- o to zo 40 50 TIME IN

ScholarsArchive@OSU

Atropisomeric 8,8'-biquinolyl derivatives : synthesis, properties and applications

Synthetic studies toward a total synthesis of paeoniflorigenin

Continuous sample flow and mercury (II) speciation studies utilizing the cold vapor atomic absorption method for mercury determination

Total Synthesis of Isotopologues of Xanthohumol and its Congeners for Biological Studies

Synthesis of novel ambifunctional atropisomeric 2,2',6,6'-tetrasubstituted biphenyls and investigation of their properties and organocatalytic activity

Excess amino acid feeding as affecting the growth rate of rats

The preparation and heats of formation of some nickel and cobalt complex salts with certain organic bases

Studies towards the total syntheses of (+)-phomactins A, D and G

Multielement atomic absorption and fluorescence spectrometry

Heats of formation of certain cobalt pyridine complexes

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