Yu, Lianhe; Muthukumaran, Kannan; Sazanovich, Igor V.; Kirmaier, Christine; Hindin, Eve; Diers, James R.; Boyle, Paul D.; Bocian, David F.; Holten, Dewey; Lindsey, Jonathan S. (2003)
The synthesis and characterization of various triads composed of a linear array of two zinc porphyrins joined via
an intervening bis(dipyrrinato)metal(II) complex are reported. The preparation exploits the facile complexation of
dipyrrins with divalent metal ions to give bis(dipyrrinato)metal(II) complexes [abbreviated (dp)2M]. Copper(II) and
palladium(II) chelates of dipyrrins (available by oxidation of dipyrromethanes) were prepared in 50−80% yield. A
one-flask synthesis of bis(...
Hale, Karl J.; Domostoj, Mathias M.; Tocher, Derek A.; Irving, Ed; Scheinmann, Feodor (2003)
An enantiospecific total synthesis of Weinreb's advanced intermediate 2 for (−)-agelastatin A has been achieved from the Hough−Richardson
aziridine 8. Noteworthy reactions in our sequence include the highly regioselective trans-diaxial ring-opening of 8 with azide ion to set up the
vicinal diamido functionality present within (−)-2 and the Grubbs−Hoveyda ring-closing metathesis (RCM) reaction that was used to construct
its cyclopentene core.
Hanna, Tracy A.; Liu, Lihua; Angeles-Boza, Alfredo M.; Kou, Xiaodi; Gutsche, C. David; Ejsmont, Krzysztof; Watson, William H.; Zakharov, Lev N.; Incarvito, Christopher D.; Rheingold, Arnold L. (2003)
The synthesis, complete characterization, and solid state structural and solution conformation
determination of calix[n]arenes (n = 4, 6, 8) is reported. A complete series of X-ray structures of the alkali
metal salts of calixarene (HC4) illustrate the great influence of the alkali metal ion on the solid state
structure of calixanions (e.g., the Li salt of monoanionic HC4 is a monomer; the Na salt of monoanionic
HC4 forms a dimer; and the K, Rb, and Cs salts exist in polymeric ...
Zheng, Jinjian; Yeung, Edward S. (2003)
We demonstrate a novel separation mechanism for large
molecules based on their radial migration in capillary
electrophoresis with applied hydrodynamic flow (HDF).
The direction of radial migration depends on the direction
of the applied HDF relative to the electric field. The radial
migration velocities are size-dependent, which could be
attributed to the different degree of deformation under
shear flow. Analytical separation was demonstrated on a
sample plug containin...
Davenport, Christian A.; Moore, Will H.; Poe, Steven C. (2003)
Publisher: ICPSR - Interuniversity Consortium for Political and Social Research
This study reports the statistical analyses of an argument about the co-variates of refugee flows.
Boyle, Timothy J.; Rodriguez, Mark A.; Ingersoll, David; Headley, Thomas J.; Bunge, Scott D.; Pedrotty, Dawn M.; De'Angeli, Sacha M.; Vick, Sara C.; Fan, Hongyou (2003)
The reaction between LiN(SiMe3)2 and Co(N(SiMe3)2)2 in THF followed by the addition of
an aryl alcohol (HOAr) yielded: [Co[(μ-OAr)2Li(THF)x]2 [where x = 2: OAr =: OC6H4Me-2
(oMP, 1), OC6H4(OCHMe2)-2 (oPP, 2), OC6H3(Me)2-2,6 (DMP, 3); where x = 1: OAr = OC6H3(OCHMe2)2-2,6 (DIP, 4)]. Undertaking the same synthesis in pyridine (py) led to the same
general structure with py molecules substituted for the THF solvent molecules: [Co[(μ-OAr)2Li(py)2]2 (OAr = oMP (5), oPP (6)]. For 1−6, ...
; Nicolas Leclercq
; Samantha Romaine-Lioud
; Christine Ferrier-Pagès
; Jean Jaubert
; Jean-Pierre Gattuso (2003)
Projects: EC | EPOCA (211384)
Environmental Sciences Division, Oak Ridge National Laboratory (2003)
Publisher: Carbon Dioxide Information Analysis Center (CDIAC)
Grobe, Hannes; Diepenbroek, Michael; Siems, Uwe (2003)
Publisher: PANGAEA - Data Publisher for Earth & Environmental Science
Al-Hussein, M.; Lohmeijer, B. G. G.; Schubert, U. S.; de Jeu, W. H. (2003)
Melt Morphology of
Metallo-Supramolecular Diblock Copolymer