- EFFICIENT PROCESS FOR MAKING 6-CARBOXY BENZOXAZOLE DERIVATIVES
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The present invention is directed to an efficient process for preparing benzoxazole derivatives comprising the step of reacting a 4-Amino-3-hydroxybenzoic acid compound of Formula III with a 3,5-Dichlorophenyl ortho ester compound of Formula II to provide the compound of Formula I wherein R1, R2a, R2b and R2c are as described herein.
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Page/Page column 24-25
(2021/06/26)
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- Single-Side Modified Beta-Anderson-Type Heteropolymolybdate Organic Derivatives
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The present disclosure provides a single-side modified β-Anderson-type heteropolymolybdate organic derivative having an anionic moiety with a general formula represented by: β-{[RC(CH2O)3]M(OH)3Mo6O18
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Paragraph 0047; 0048
(2019/12/02)
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- Multypodal tethers for high-density attachment of redox-active moieties to substrates
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This invention provides redox-active molecules attached to polypodal (e.g., bipodal, tripodal, quadrapodal, pentapodal, etc.) tethers that can be used for attachment of the redox-active molecules to a substrate (e.g., an electrode). The tethered redox-active molecules are useful for the fabrication of memory devices.
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- A new tripodal ligand system based on the iminophosphorane functional group. Part 1: Synthesis and characterization
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Two tripodal alcohols, viz., 1,1,1-tris(hydroxymethyl)ethane and α,α,α-tris(hydroxymethyl)toluene were converted by an efficient multi-step pathway involving azide formation into the corresponding tris(iminophosphorane) scaffolds bearing cyclopentyl (Cp)
- Beaufort, Laurence,Delaude, Lionel,Noels, Alfred F.
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p. 7003 - 7008
(2008/02/05)
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- Trivalent cluster mannosides with aromatic partial structure as ligands for the type 1 fimbrial lectin of Escherichia coli
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Mannose-specific adhesion of E. coli bacteria to their host cells is mediated by so-called type 1 fimbriae containing lectin domains present on the type 1 fimbrial FimH protein. The crystal structure of a FimH-FimC(chaperone) protein complex revealed a nu
- R?ckendorf, Niels,Sperling, Oliver,Lindhorst, Thisbe K.
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- New polypodal polycarboxylic ligands - Complexation of rare-earth ions in aqueous solution
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The complexation ability of new polypodal carboxylic ligands prepared from 2,2-bis(hydroxymethyl)-1-alkanols was investigated in aqueous solution with Y3+ and various lanthanide ions (La3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+). The values of the stability constants for ML complexes are of the order of 104 for the hexadentate trioxypropionates, 107 for the hexadentate trioxyacetates and 1014 for the nonadentate triaminohexaacetates. In these systems, the nitrogens of the amino groups seem to be better chelating atoms than the oxygens of the ether groups. The hydration numbers of dysprosium(III) complexes have been determined from the DyIII-induced 17O NMR water shifts.
- Viguier, Romain,Serratrice, Guy,Dupraz, Agnes,Dupuy, Claude
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p. 1789 - 1795
(2007/10/03)
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- Synthesis and Complex Chemistry of Functionalised Tripod Ligands RC(CH2PPh2)3
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Malonic ester 1 is alkylated and converted into the triols RC(CH2OH)3 (5).These are easily converted into the corresponding functionalised tripodal ligands RC(CH2PPh2)3 (7) with R = Bzl (a), n-C12H25 (b), (CH3)2CH(CH2)2 (c).Crystals suitable for X-ray crystallography have been obtained of the ligand 7a.In addition, the tripod ligands 7a and 7c have been further characterized by the syntheses and X-ray analyses of the nickel complex (8a), the iron complex (BF4)2 ; and the cobalt complex >(BPh4)(10*BF4). - Key Words: Tripod ligand synthesis / Tripod nickel chloro complexes / Tripod iron tris(acetonitrile) complexes / Tripod cobalt acetate complexes
- Janssen, Bernd C.,Sernau, Volker,Huttner, Gottfried,Asam, Alexander,Walter, Olaf,et al.
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- Tripodal Triamidostannates as Building Blocks in the Generation of Sn-M-Bonded Heterobimetallics (M = Fe, Ru)
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By in situ lithiation of the trifunctional amines H3CC(CH2NHSiMe3)3, PhC(CH2NHSiMe3)3 and HC3 and subsequent reaction with SnCl2 the corresponding triamidostannates were obtained.These were coupled with CpM(CO)2Cl (M = Fe, Ru) to yield t
- Hellmann, Konrad W.,Friedrich, Stefan,Gade, Lutz H.,Li, Wan-Sheung,McPartlin, Mary
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